{"title":"V-Cell Carbon Filters | 12 Inch Deep High-Capacity Gas-Phase","description":"\u003cp\u003eV-cell extended-surface carbon filters in \u003cstrong\u003e12″ deep\u003c\/strong\u003e form factor — high-capacity gas-phase adsorption for industrial and commercial scale applications. Koch product families: \u003cstrong\u003eDuraPure\u003c\/strong\u003e (honeycomb cells, premium coconut shell carbon, 18-26 lbs per filter), \u003cstrong\u003eDuraKleen\u003c\/strong\u003e (CPS bicomponent fiber technology with 500 gsm 20x50 mesh carbon, for sub-ppm AMC), and \u003cstrong\u003eDuraKleen V\u003c\/strong\u003e (pleated media packs with MERV 8 or MERV 15 efficiency).\u003c\/p\u003e","products":[{"product_id":"koch-durapure-standard-capacity-v-cell-carbon-filter","title":"Koch DuraPure Standard Capacity (Extended Surface V-Cell Activated Carbon Filter)","description":"\u003cp\u003ePer Koch DuraPure Bulletin K-397-B, the Koch \u003cstrong\u003eDuraPure Standard Capacity\u003c\/strong\u003e is an \u003cstrong\u003eextended-surface V-cell activated carbon filter\u003c\/strong\u003e for high-volume gas-phase adsorption in commercial and industrial HVAC systems. The DuraPure uses \u003cstrong\u003epremium grade granular 60% activated coconut shell carbon\u003c\/strong\u003e in a unique V-shaped frame — the Standard Capacity configuration delivers \u003cstrong\u003e5 lbs of solvent capacity\u003c\/strong\u003e per filter at \u003cstrong\u003e0.34″ w.g. initial pressure drop\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eWhat you get: V-cell activated carbon filters, sold by the case\u003c\/h3\u003e\u003cp\u003eEach variant is a complete DuraPure Standard Capacity V-cell filter with a plastic and metal frame, individual moisture-resistant honeycomb carbon cells, and thermoplastic hot-melt sealant. All variants are \u003cstrong\u003e12″ deep\u003c\/strong\u003e; carbon load varies by face dimensions:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e — 18 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e — 15 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e — 8 lbs carbon, Case of 2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDuraPure construction\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e Extended-surface V-cell carbon filter, 12″ deep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e Premium grade granular activated carbon, \u003cstrong\u003ecoconut shell\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon Activity Rating:\u003c\/strong\u003e Minimum \u003cstrong\u003e60% on carbon tetrachloride (CCl\u003csub\u003e4\u003c\/sub\u003e) at 25°C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolvent capacity (Standard Capacity):\u003c\/strong\u003e \u003cstrong\u003e5 lbs\u003c\/strong\u003e per filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial pressure drop:\u003c\/strong\u003e \u003cstrong\u003e0.34″ w.g.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Plastic and metal frame components — rugged, rigid, easy to install. V-shaped extended-surface design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single or double header available. Specify when ordering or \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e for header configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon cells:\u003c\/strong\u003e Individual moisture-resistant honeycomb carbon cells deliver high-efficiency contaminant removal with relatively low resistance to airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealant:\u003c\/strong\u003e Thermoplastic hot-melt adhesive secures individual carbon cells within the frame and eliminates air bypass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisposability:\u003c\/strong\u003e Single-use disposable; not washable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNominal vs actual dimensions\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eNominal Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eActual Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eCarbon Weight (Standard Capacity)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eInitial Pressure Drop\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e23.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e18 lbs\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.34″ w.g.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e19.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e15 lbs\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.34″ w.g.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e11.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e8 lbs\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.34″ w.g.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eContaminants effectively controlled by activated carbon\u003c\/h3\u003e\u003cp\u003ePremium 60% activated carbon effectively adsorbs a broad spectrum of gas-phase contaminants. Categories well-controlled include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolatile organic compounds (VOCs) and solvents:\u003c\/strong\u003e acetone, toluene, xylene, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), ethyl acetate, butyl acetate, mineral spirits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChlorinated compounds:\u003c\/strong\u003e carbon tetrachloride, chloroform, trichloroethylene, tetrachloroethylene, ethylene dichloride, chlorobenzene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAromatic hydrocarbons:\u003c\/strong\u003e benzene, ethylbenzene, styrene, toluene, xylene, naphtha\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAliphatic hydrocarbons:\u003c\/strong\u003e hexane, heptane, octane, decane, undecane, dodecane, cyclohexane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlcohols and ketones:\u003c\/strong\u003e butyl alcohol, ethanol, isopropyl alcohol, isoamyl alcohol, cyclohexanone, diethyl ketone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSulfur compounds:\u003c\/strong\u003e carbon disulfide, dimethyl disulfide, ethyl sulfide, butyl mercaptan, thiophenol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrogen-containing:\u003c\/strong\u003e pyridine, dibutylamine, pentylamine, nitrogen dioxide (\u0026lt;100 ppb), nitroethane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhenols and acids:\u003c\/strong\u003e phenol, cresol, acetic acid, butyric acid, formic acid, propionic acid, valeric acid\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eKoch K-397-B publishes a comprehensive list of approximately 100+ specific compounds; the full list is available in the Koch bulletin linked at the bottom of this page.\u003c\/p\u003e\u003ch3\u003eSpecialized impregnated carbon (custom order)\u003c\/h3\u003e\u003cp\u003eThe DuraPure is also available with \u003cstrong\u003especialized impregnated carbon media\u003c\/strong\u003e for removal of \u003cstrong\u003eammonia, hydrogen sulfide, and other difficult-to-remove compounds\u003c\/strong\u003e that standard activated carbon is less effective against. These specialized configurations are custom-order — \u003ca href=\"\/pages\/quote\"\u003erequest a quote\u003c\/a\u003e with your target contaminant profile and we'll work with Koch to specify the right impregnated media for your application.\u003c\/p\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eDuraPure is specified for high-volume gas-phase adsorption in demanding commercial and industrial environments:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAirports\u003c\/li\u003e\n\u003cli\u003eIndustrial facilities\u003c\/li\u003e\n\u003cli\u003eChemical plants\u003c\/li\u003e\n\u003cli\u003eOffice buildings\u003c\/li\u003e\n\u003cli\u003eAnd other commercial air filtration systems where activated carbon gas-phase adsorption is required at scale\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch Green Product status (per Koch K-397-B)\u003c\/h3\u003e\u003cp\u003eKoch designates the DuraPure as a \u003cem\u003e\"Koch Green Product\"\u003c\/em\u003e per Bulletin K-397-B. Koch states this designation reflects the product meeting or exceeding their criteria in one or more of the following categories: earning LEED Points, reducing energy costs, extending filter lifecycles, conserving resources, and improving Indoor Environmental Quality.\u003c\/p\u003e\u003cp\u003eThis claim is Koch's own product designation per their published bulletin. For LEED point eligibility specific to your project, consult the current LEED rating system criteria and Koch Filter Corporation for confirmation that DuraPure qualifies for the credits you're targeting.\u003c\/p\u003e\u003ch3\u003eStandard Capacity vs High Capacity — choosing your DuraPure\u003c\/h3\u003e\u003cp\u003eKoch produces DuraPure in two capacity tiers. The choice comes down to how much carbon you need vs how much pressure drop your HVAC system can handle:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuraPure Standard Capacity (this product):\u003c\/strong\u003e \u003cstrong\u003e5 lbs solvent capacity\u003c\/strong\u003e, 0.34″ w.g. initial pressure drop. 18 lbs of carbon in the 24x24x12 size. \u003cstrong\u003eUse when pressure-drop budget is tight\u003c\/strong\u003e or when contaminant loads are moderate. The lower pressure drop is the key advantage — less fan energy required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/koch-durapure-high-capacity-v-cell-carbon-filter\"\u003eDuraPure High Capacity\u003c\/a\u003e:\u003c\/strong\u003e 8 lbs solvent capacity, 0.74″ w.g. initial pressure drop. 26 lbs of carbon in the 24x24x12 size. Use when service life and gas removal capacity are the priority and your HVAC fan can handle the higher pressure drop.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor lower-depth gas-phase filtration in 1″\/2″\/4″ pleated panel form factors, see the Koch \u003ca href=\"\/products\/koch-odorkleen-es-merv-8-carbon-particulate-filter\"\u003eOdorKleen ES\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-250-carbonweb-merv-8-carbon-particulate-filter\"\u003eOdorKleen 250\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-200-m13-merv-13-carbon-particulate-filter\"\u003eOdorKleen 200\/M13\u003c\/a\u003e, and \u003ca href=\"\/products\/koch-odorkleen-600-carbonweb-merv-10-carbon-particulate-filter\"\u003eOdorKleen 600\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eSizing and ordering notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes are nominal.\u003c\/strong\u003e Per Koch K-397-B, actual dimensions are slightly less: 24x24x12 nominal = 23.38″ x 23.38″ x 11.50″ actual; same 1\/2″ pattern in width and 1\/2″ in depth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″ deep filters require deep filter racks.\u003c\/strong\u003e These are commercial\/industrial-scale filters — verify your filter housing accommodates 12″ depth before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or double header available\u003c\/strong\u003e — specify when ordering. Header configuration affects how the filter mounts in the housing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEach variant ships in the case quantity shown.\u003c\/strong\u003e 24x24x12 and 20x24x12 ship as individual units; 12x24x12 ships 2 per case.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement schedule:\u003c\/strong\u003e Drive by pressure drop curve and odor breakthrough. With the recommended 1.0″ w.g. final pressure drop and the published initial pressure drop, you can estimate service life from your typical airflow and contaminant load. For specialty impregnated carbon configurations targeting ammonia, H\u003csub\u003e2\u003c\/sub\u003eS, or other difficult contaminants, monitor for odor breakthrough rather than pressure drop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon disposal:\u003c\/strong\u003e Spent carbon may have specific disposal requirements depending on captured contaminants and quantities. For chemical plant or industrial applications, follow your local hazardous waste regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch product literature\u003c\/h3\u003e\u003cp\u003eDetailed product specifications, the complete contaminant list, capacity tables, and full performance data for Koch DuraPure are published in \u003cstrong\u003eKoch Bulletin K-397-B\u003c\/strong\u003e: \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/DuraPURE_2022.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDuraPure Product Specification PDF\u003c\/a\u003e (Koch Filter Corporation). For specialized impregnated media variants or LEED-specific qualifications, consult Koch Filter Corporation (\u003ca href=\"https:\/\/www.kochfilter.com\/\" target=\"_blank\" rel=\"noopener\"\u003ekochfilter.com\u003c\/a\u003e) or \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"24\"x24\"x12\" (Case of 1)","offer_id":44119157768314,"sku":"111-800-101","price":878.33,"currency_code":"USD","in_stock":true},{"title":"20\"x24\"x12\" (Case of 1)","offer_id":44119157801082,"sku":"111-800-103","price":715.91,"currency_code":"USD","in_stock":true},{"title":"12\"x24\"x12\" (Case of 2)","offer_id":44119157833850,"sku":"111-800-102","price":1190.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_3252f77a-2abe-46ed-85c4-a032450a6794.jpg?v=1777863236"},{"product_id":"koch-durapure-high-capacity-v-cell-carbon-filter","title":"Koch DuraPure High Capacity (Extended Surface V-Cell Activated Carbon Filter)","description":"\u003cp\u003ePer Koch DuraPure Bulletin K-397-B, the Koch \u003cstrong\u003eDuraPure High Capacity\u003c\/strong\u003e is an \u003cstrong\u003eextended-surface V-cell activated carbon filter\u003c\/strong\u003e for high-volume gas-phase adsorption in commercial and industrial HVAC systems. The DuraPure uses \u003cstrong\u003epremium grade granular 60% activated coconut shell carbon\u003c\/strong\u003e in a unique V-shaped frame — the High Capacity configuration delivers \u003cstrong\u003e8 lbs of solvent capacity\u003c\/strong\u003e per filter at \u003cstrong\u003e0.74″ w.g. initial pressure drop\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eWhat you get: V-cell activated carbon filters, sold by the case\u003c\/h3\u003e\u003cp\u003eEach variant is a complete DuraPure High Capacity V-cell filter with a plastic and metal frame, individual moisture-resistant honeycomb carbon cells, and thermoplastic hot-melt sealant. All variants are \u003cstrong\u003e12″ deep\u003c\/strong\u003e; carbon load varies by face dimensions:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e — 26 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e — 21 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e — 12 lbs carbon, Case of 2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDuraPure construction\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e Extended-surface V-cell carbon filter, 12″ deep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e Premium grade granular activated carbon, \u003cstrong\u003ecoconut shell\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon Activity Rating:\u003c\/strong\u003e Minimum \u003cstrong\u003e60% on carbon tetrachloride (CCl\u003csub\u003e4\u003c\/sub\u003e) at 25°C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolvent capacity (High Capacity):\u003c\/strong\u003e \u003cstrong\u003e8 lbs\u003c\/strong\u003e per filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial pressure drop:\u003c\/strong\u003e \u003cstrong\u003e0.74″ w.g.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Plastic and metal frame components — rugged, rigid, easy to install. V-shaped extended-surface design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single or double header available. Specify when ordering or \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e for header configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon cells:\u003c\/strong\u003e Individual moisture-resistant honeycomb carbon cells deliver high-efficiency contaminant removal with relatively low resistance to airflow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealant:\u003c\/strong\u003e Thermoplastic hot-melt adhesive secures individual carbon cells within the frame and eliminates air bypass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisposability:\u003c\/strong\u003e Single-use disposable; not washable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNominal vs actual dimensions\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eNominal Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eActual Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eCarbon Weight (High Capacity)\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eInitial Pressure Drop\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e23.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e26 lbs\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.74″ w.g.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e19.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e21 lbs\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.74″ w.g.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e11.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e12 lbs\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.74″ w.g.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eContaminants effectively controlled by activated carbon\u003c\/h3\u003e\u003cp\u003ePremium 60% activated carbon effectively adsorbs a broad spectrum of gas-phase contaminants. Categories well-controlled include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolatile organic compounds (VOCs) and solvents:\u003c\/strong\u003e acetone, toluene, xylene, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), ethyl acetate, butyl acetate, mineral spirits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChlorinated compounds:\u003c\/strong\u003e carbon tetrachloride, chloroform, trichloroethylene, tetrachloroethylene, ethylene dichloride, chlorobenzene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAromatic hydrocarbons:\u003c\/strong\u003e benzene, ethylbenzene, styrene, toluene, xylene, naphtha\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAliphatic hydrocarbons:\u003c\/strong\u003e hexane, heptane, octane, decane, undecane, dodecane, cyclohexane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlcohols and ketones:\u003c\/strong\u003e butyl alcohol, ethanol, isopropyl alcohol, isoamyl alcohol, cyclohexanone, diethyl ketone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSulfur compounds:\u003c\/strong\u003e carbon disulfide, dimethyl disulfide, ethyl sulfide, butyl mercaptan, thiophenol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrogen-containing:\u003c\/strong\u003e pyridine, dibutylamine, pentylamine, nitrogen dioxide (\u0026lt;100 ppb), nitroethane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhenols and acids:\u003c\/strong\u003e phenol, cresol, acetic acid, butyric acid, formic acid, propionic acid, valeric acid\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eKoch K-397-B publishes a comprehensive list of approximately 100+ specific compounds; the full list is available in the Koch bulletin linked at the bottom of this page.\u003c\/p\u003e\u003ch3\u003eSpecialized impregnated carbon (custom order)\u003c\/h3\u003e\u003cp\u003eThe DuraPure is also available with \u003cstrong\u003especialized impregnated carbon media\u003c\/strong\u003e for removal of \u003cstrong\u003eammonia, hydrogen sulfide, and other difficult-to-remove compounds\u003c\/strong\u003e that standard activated carbon is less effective against. These specialized configurations are custom-order — \u003ca href=\"\/pages\/quote\"\u003erequest a quote\u003c\/a\u003e with your target contaminant profile and we'll work with Koch to specify the right impregnated media for your application.\u003c\/p\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eDuraPure is specified for high-volume gas-phase adsorption in demanding commercial and industrial environments:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAirports\u003c\/li\u003e\n\u003cli\u003eIndustrial facilities\u003c\/li\u003e\n\u003cli\u003eChemical plants\u003c\/li\u003e\n\u003cli\u003eOffice buildings\u003c\/li\u003e\n\u003cli\u003eAnd other commercial air filtration systems where activated carbon gas-phase adsorption is required at scale\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch Green Product status (per Koch K-397-B)\u003c\/h3\u003e\u003cp\u003eKoch designates the DuraPure as a \u003cem\u003e\"Koch Green Product\"\u003c\/em\u003e per Bulletin K-397-B. Koch states this designation reflects the product meeting or exceeding their criteria in one or more of the following categories: earning LEED Points, reducing energy costs, extending filter lifecycles, conserving resources, and improving Indoor Environmental Quality.\u003c\/p\u003e\u003cp\u003eThis claim is Koch's own product designation per their published bulletin. For LEED point eligibility specific to your project, consult the current LEED rating system criteria and Koch Filter Corporation for confirmation that DuraPure qualifies for the credits you're targeting.\u003c\/p\u003e\u003ch3\u003eStandard Capacity vs High Capacity — choosing your DuraPure\u003c\/h3\u003e\u003cp\u003eKoch produces DuraPure in two capacity tiers. The choice comes down to how much carbon you need vs how much pressure drop your HVAC system can handle:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuraPure High Capacity (this product):\u003c\/strong\u003e \u003cstrong\u003e8 lbs solvent capacity\u003c\/strong\u003e, 0.74″ w.g. initial pressure drop. 26 lbs of carbon in the 24x24x12 size. \u003cstrong\u003eUse when service life and gas removal capacity are the priority\u003c\/strong\u003e, and your HVAC fan can handle the higher pressure drop. Trades airflow for adsorption capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/koch-durapure-standard-capacity-v-cell-carbon-filter\"\u003eDuraPure Standard Capacity\u003c\/a\u003e:\u003c\/strong\u003e 5 lbs solvent capacity, 0.34″ w.g. initial pressure drop. 18 lbs of carbon in the 24x24x12 size. Use when pressure-drop budget is tight or when lighter contaminant loads don't require the High Capacity's additional carbon.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor lower-depth gas-phase filtration in 1″\/2″\/4″ pleated panel form factors, see the Koch \u003ca href=\"\/products\/koch-odorkleen-es-merv-8-carbon-particulate-filter\"\u003eOdorKleen ES\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-250-carbonweb-merv-8-carbon-particulate-filter\"\u003eOdorKleen 250\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-200-m13-merv-13-carbon-particulate-filter\"\u003eOdorKleen 200\/M13\u003c\/a\u003e, and \u003ca href=\"\/products\/koch-odorkleen-600-carbonweb-merv-10-carbon-particulate-filter\"\u003eOdorKleen 600\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eSizing and ordering notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes are nominal.\u003c\/strong\u003e Per Koch K-397-B, actual dimensions are slightly less: 24x24x12 nominal = 23.38″ x 23.38″ x 11.50″ actual; same 1\/2″ pattern in width and 1\/2″ in depth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″ deep filters require deep filter racks.\u003c\/strong\u003e These are commercial\/industrial-scale filters — verify your filter housing accommodates 12″ depth before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or double header available\u003c\/strong\u003e — specify when ordering. Header configuration affects how the filter mounts in the housing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEach variant ships in the case quantity shown.\u003c\/strong\u003e 24x24x12 and 20x24x12 ship as individual units; 12x24x12 ships 2 per case.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement schedule:\u003c\/strong\u003e Drive by pressure drop curve and odor breakthrough. With the recommended 1.0″ w.g. final pressure drop and the published initial pressure drop, you can estimate service life from your typical airflow and contaminant load. For specialty impregnated carbon configurations targeting ammonia, H\u003csub\u003e2\u003c\/sub\u003eS, or other difficult contaminants, monitor for odor breakthrough rather than pressure drop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon disposal:\u003c\/strong\u003e Spent carbon may have specific disposal requirements depending on captured contaminants and quantities. For chemical plant or industrial applications, follow your local hazardous waste regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch product literature\u003c\/h3\u003e\u003cp\u003eDetailed product specifications, the complete contaminant list, capacity tables, and full performance data for Koch DuraPure are published in \u003cstrong\u003eKoch Bulletin K-397-B\u003c\/strong\u003e: \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/DuraPURE_2022.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDuraPure Product Specification PDF\u003c\/a\u003e (Koch Filter Corporation). For specialized impregnated media variants or LEED-specific qualifications, consult Koch Filter Corporation (\u003ca href=\"https:\/\/www.kochfilter.com\/\" target=\"_blank\" rel=\"noopener\"\u003ekochfilter.com\u003c\/a\u003e) or \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"24\"x24\"x12\" (Case of 1)","offer_id":44119157866618,"sku":"111-801-101","price":941.2,"currency_code":"USD","in_stock":true},{"title":"20\"x24\"x12\" (Case of 1)","offer_id":44119157899386,"sku":"111-801-103","price":840.81,"currency_code":"USD","in_stock":true},{"title":"12\"x24\"x12\" (Case of 2)","offer_id":44119157932154,"sku":"111-801-102","price":1279.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_7c078e78-3715-474b-bef8-91aa13dc8bf2.jpg?v=1777863242"},{"product_id":"koch-durakleen-single-header-merv-8-cps-carbon-filter","title":"Koch DuraKleen Single Header MERV 8 (CPS Carbon V-Cell Gas-Phase Filter)","description":"\u003cp\u003ePer Koch Bulletin \u003cstrong\u003ePB-1202\u003c\/strong\u003e, the Koch \u003cstrong\u003eDuraKleen Single Header MERV 8\u003c\/strong\u003e is a \u003cstrong\u003ehigh-efficiency gas-phase V-cell carbon filter\u003c\/strong\u003e engineered for environments with \u003cstrong\u003eairborne molecular contamination (AMC)\u003c\/strong\u003e at sub-ppm levels. The DuraKleen uses Koch's patented \u003cstrong\u003eCelbond Particulate Structure (CPS) technology\u003c\/strong\u003e, suspending \u003cstrong\u003e500 gsm of 20x50 mesh activated carbon\u003c\/strong\u003e in a tightly bonded three-dimensional network of bicomponent fibers. This Single Header configuration is rated \u003cstrong\u003eMERV 8\u003c\/strong\u003e and is sized to fit single header housing configurations.\u003c\/p\u003e\u003ch3\u003eWhat you get: V-cell gas-phase carbon filters, sold by the case\u003c\/h3\u003e\u003cp\u003eEach variant is a complete DuraKleen Single Header MERV 8 V-cell filter with the CPS-technology carbon media. All variants are \u003cstrong\u003e12″ deep\u003c\/strong\u003e; pricing varies by face dimensions:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e — 6 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x25″x12″\u003c\/strong\u003e — \u003cem\u003eadditional size\u003c\/em\u003e — 5 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e — 6 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x20″x12″\u003c\/strong\u003e — \u003cem\u003eadditional size\u003c\/em\u003e — 3.7 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e — 3 lbs carbon, Case of 2\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eSizes marked \"additional size\" are stocked by RTF beyond Koch's PB-1202 standard published sizes (24x24x12, 20x24x12, 12x24x12). The 20x20x12 and 20x25x12 dimensions use the same CPS construction at proportional carbon load.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eCelbond Particulate Structure (CPS) technology\u003c\/h3\u003e\u003cp\u003eCPS technology is the key differentiator that distinguishes DuraKleen from standard honeycomb carbon filters:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon distribution:\u003c\/strong\u003e Activated carbon is suspended in uniform distribution throughout a tightly bonded three-dimensional network of bicomponent fibers — no honeycomb cells or loose granular carbon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon mesh size:\u003c\/strong\u003e \u003cstrong\u003e20x50 mesh\u003c\/strong\u003e — small mesh = high efficiency. Smaller carbon particles expose more surface area to the airstream per unit volume.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon load:\u003c\/strong\u003e 500 gsm. The combination of small mesh and high gsm gives DuraKleen an outstanding balance of first-pass removal efficiency, filter life, and low pressure drop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBonding efficiency:\u003c\/strong\u003e The fiber-to-carbon bond obstructs only approximately 1% of the carbon's surface area, leaving roughly 99% available for gas adsorption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTortuous airflow path:\u003c\/strong\u003e Gas contaminants pass through tortuous pathways inside the CPS media, ensuring intimate contact between contaminant molecules and the carbon adsorption surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEliminates post-filtration:\u003c\/strong\u003e The fiber-to-carbon bond eliminates the need for post-filtration in most applications — the carbon stays where it's placed and doesn't shed downstream.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDuraKleen Single Header MERV 8 construction\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e Extended-surface V-cell carbon filter, 12″ deep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia technology:\u003c\/strong\u003e Celbond Particulate Structure (CPS) — activated carbon suspended in 3D bicomponent fiber network\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e 500 gsm of 20x50 mesh activated carbon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial resistance:\u003c\/strong\u003e \u003cstrong\u003e0.24″ w.g.\u003c\/strong\u003e @ 500 FPM — substantially lower than DuraPure honeycomb-cell filters at the same face velocity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header — mounting flange configuration: single header\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV rating:\u003c\/strong\u003e MERV 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable depths:\u003c\/strong\u003e 12″ only (deep V-cell architecture)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolishing filter:\u003c\/strong\u003e Koch positions DuraKleen as an \u003cem\u003e\"excellent polishing filter for high contaminant concentrations.\"\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisposability:\u003c\/strong\u003e Single-use disposable; not washable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch published dimensions and media area (PB-1202)\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eNominal Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eActual Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eInitial Resistance @ 500 FPM\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eMedia Area\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e23.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e55 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e19.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e44 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e11.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e24 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe table above documents Koch's standard published sizes per PB-1202. RTF also stocks 20″x20″x12″ and 20″x25″x12″ in the same DuraKleen CPS construction; carbon load and media area scale proportionally with face dimensions.\u003c\/p\u003e\u003ch3\u003eAirborne molecular contamination (AMC) and polishing filtration\u003c\/h3\u003e\u003cp\u003eDuraKleen is engineered for environments where gas-phase contaminants need to be reduced to \u003cstrong\u003esub-ppm levels\u003c\/strong\u003e — concentrations where standard carbon filtration starts to lose effectiveness. Typical AMC applications include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCleanrooms and semiconductor manufacturing:\u003c\/strong\u003e trace amines, acids, and organics that interfere with photolithography and surface chemistry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuseum and archive preservation:\u003c\/strong\u003e trace acids and oxidants that degrade paper, photographs, textiles, and artwork over time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePharmaceutical manufacturing:\u003c\/strong\u003e trace contaminants that affect product purity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHospital sensitive areas:\u003c\/strong\u003e sub-ppm gas-phase contaminants in operating theaters, isolation rooms, and laboratory spaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolishing filtration:\u003c\/strong\u003e Used downstream of higher-capacity filters (such as DuraPure) to reduce residual contaminant concentrations to levels that primary filters can't reach efficiently\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDuraKleen is also \u003cstrong\u003eavailable in other media options for the removal of specific types of amines and acid gases\u003c\/strong\u003e — \u003ca href=\"\/pages\/quote\"\u003erequest a quote\u003c\/a\u003e with your target contaminant profile.\u003c\/p\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eDuraKleen is specified for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChemical Storage Rooms\u003c\/li\u003e\n\u003cli\u003eHospitals\u003c\/li\u003e\n\u003cli\u003eSports Arenas\u003c\/li\u003e\n\u003cli\u003eLaboratories\u003c\/li\u003e\n\u003cli\u003eAirports\u003c\/li\u003e\n\u003cli\u003eCasinos\u003c\/li\u003e\n\u003cli\u003eMuseums and Archives\u003c\/li\u003e\n\u003cli\u003eIndustrial Facilities\u003c\/li\u003e\n\u003cli\u003ePharmaceutical\u003c\/li\u003e\n\u003cli\u003eCommercial Buildings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoosing your DuraKleen configuration\u003c\/h3\u003e\u003cp\u003eDuraKleen ships in five configurations for housing compatibility and integrated particulate filtration capacity. The choice depends on your existing filter housing and what level of integrated particulate capture you need alongside the gas-phase performance:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-single-header-merv-15-cps-carbon-filter\"\u003eDuraKleen Single Header MERV 15\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-no-header-box-style-merv-8-cps-carbon-filter\"\u003eDuraKleen No Header Box Style MERV 8\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-no-header-box-style-merv-15-cps-carbon-filter\"\u003eDuraKleen No Header Box Style MERV 15\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-double-header-merv-8-cps-carbon-filter\"\u003eDuraKleen Double Header MERV 8\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you're unsure which configuration fits your existing filter housing, \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e with your housing make\/model and we'll help you specify the right header configuration. The MERV rating reflects the integrated particulate filtration capacity of the configuration; all configurations share the same Koch CPS gas-phase carbon performance.\u003c\/p\u003e\u003ch3\u003eDuraKleen vs DuraPure — choosing your gas-phase platform\u003c\/h3\u003e\u003cp\u003eKoch produces two extended-surface 12″-deep carbon filter platforms. They serve different gas-phase use cases:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuraKleen (this product family):\u003c\/strong\u003e CPS bicomponent fiber media with 500 gsm 20x50 mesh carbon. Initial resistance \u003cstrong\u003e0.24″ w.g. @ 500 FPM\u003c\/strong\u003e. Engineered for \u003cstrong\u003esub-ppm AMC removal\u003c\/strong\u003e and polishing filtration. Koch's breakthrough analysis shows DuraKleen outperforming honeycomb carbon designs at low concentration levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/koch-durapure-standard-capacity-v-cell-carbon-filter\"\u003eDuraPure Standard Capacity\u003c\/a\u003e\u003c\/strong\u003e and \u003cstrong\u003e\u003ca href=\"\/products\/koch-durapure-high-capacity-v-cell-carbon-filter\"\u003eDuraPure High Capacity\u003c\/a\u003e:\u003c\/strong\u003e Honeycomb carbon cells with premium coconut shell granular carbon. 18–26 lbs carbon load per filter, 0.34–0.74″ w.g. initial resistance. Engineered for \u003cstrong\u003ehigh-volume gas-phase capacity\u003c\/strong\u003e at moderate contaminant concentrations — specified for airports, industrial facilities, chemical plants, office buildings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor lower-depth gas-phase filtration in 1″\/2″\/4″ pleated panel form factors, see the Koch \u003ca href=\"\/products\/koch-odorkleen-es-merv-8-carbon-particulate-filter\"\u003eOdorKleen ES\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-250-carbonweb-merv-8-carbon-particulate-filter\"\u003eOdorKleen 250\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-200-m13-merv-13-carbon-particulate-filter\"\u003eOdorKleen 200\/M13\u003c\/a\u003e, and \u003ca href=\"\/products\/koch-odorkleen-600-carbonweb-merv-10-carbon-particulate-filter\"\u003eOdorKleen 600\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eSizing and ordering notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes are nominal.\u003c\/strong\u003e Per Koch PB-1202, actual dimensions are slightly less: 24x24x12 nominal = 23.38″ x 23.38″ x 11.50″ actual; same 1\/2″-1″ pattern across sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″ deep filters require deep filter racks.\u003c\/strong\u003e Verify your filter housing accommodates 12″ depth before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration is housing-specific.\u003c\/strong\u003e This product is the Single Header configuration. If your housing requires a different header type, see the \u003cstrong\u003eChoosing your DuraKleen configuration\u003c\/strong\u003e section above for cross-links to the other configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\"Call for Quote\" sizes:\u003c\/strong\u003e Some configuration\/size combinations are special-order only. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e for these or for facility-scale orders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecialty media:\u003c\/strong\u003e DuraKleen is also available with specialized media for amines and acid gases. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e with your target contaminant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement schedule:\u003c\/strong\u003e Drive by pressure drop curve and breakthrough monitoring. For sub-ppm AMC applications, monitor downstream concentration directly — pressure drop alone may not signal breakthrough at trace contaminant levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon disposal:\u003c\/strong\u003e Spent CPS media may have specific disposal requirements depending on captured contaminants. Follow your local hazardous waste regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch product literature\u003c\/h3\u003e\u003cp\u003eDetailed product specifications, Dynamic Breakthrough Analysis, and complete performance data for Koch DuraKleen are published in \u003cstrong\u003eKoch Bulletin PB-1202\u003c\/strong\u003e: \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/DuraKleen.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDuraKleen Product Specification PDF\u003c\/a\u003e (Koch Filter Corporation). For specialty media variants targeting amines or acid gases, consult Koch Filter Corporation (\u003ca href=\"https:\/\/www.kochfilter.com\/\" target=\"_blank\" rel=\"noopener\"\u003ekochfilter.com\u003c\/a\u003e) or \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"24\"x24\"x12\" (Case of 1)","offer_id":44119158161530,"sku":"112-685-001","price":691.91,"currency_code":"USD","in_stock":true},{"title":"20\"x25\"x12\" (Case of 1)","offer_id":44119158194298,"sku":"112-685-015","price":622.1,"currency_code":"USD","in_stock":true},{"title":"20\"x24\"x12\" (Case of 1)","offer_id":44119158227066,"sku":"112-685-006","price":619.54,"currency_code":"USD","in_stock":true},{"title":"20\"x20\"x12\" (Case of 1)","offer_id":44119158259834,"sku":"112-685-005","price":488.54,"currency_code":"USD","in_stock":true},{"title":"12\"x24\"x12\" (Case of 2)","offer_id":44119158292602,"sku":"112-685-002","price":860.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_1eceb39b-845e-4290-866a-dbb2195b1cbc.png?v=1777864360"},{"product_id":"koch-durakleen-single-header-merv-15-cps-carbon-filter","title":"Koch DuraKleen Single Header MERV 15 (CPS Carbon V-Cell Gas-Phase Filter)","description":"\u003cp\u003ePer Koch Bulletin \u003cstrong\u003ePB-1202\u003c\/strong\u003e, the Koch \u003cstrong\u003eDuraKleen Single Header MERV 15\u003c\/strong\u003e is a \u003cstrong\u003ehigh-efficiency gas-phase V-cell carbon filter\u003c\/strong\u003e engineered for environments with \u003cstrong\u003eairborne molecular contamination (AMC)\u003c\/strong\u003e at sub-ppm levels. The DuraKleen uses Koch's patented \u003cstrong\u003eCelbond Particulate Structure (CPS) technology\u003c\/strong\u003e, suspending \u003cstrong\u003e500 gsm of 20x50 mesh activated carbon\u003c\/strong\u003e in a tightly bonded three-dimensional network of bicomponent fibers. This Single Header configuration is rated \u003cstrong\u003eMERV 15\u003c\/strong\u003e and is sized to fit single header housing configurations.\u003c\/p\u003e\u003ch3\u003eWhat you get: V-cell gas-phase carbon filters, sold by the case\u003c\/h3\u003e\u003cp\u003eEach variant is a complete DuraKleen Single Header MERV 15 V-cell filter with the CPS-technology carbon media. All variants are \u003cstrong\u003e12″ deep\u003c\/strong\u003e; pricing varies by face dimensions:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e — 6 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x25″x12″\u003c\/strong\u003e — \u003cem\u003eadditional size\u003c\/em\u003e — 5 lbs carbon, available by quote. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e — 6 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x20″x12″\u003c\/strong\u003e — \u003cem\u003eadditional size\u003c\/em\u003e — 3.7 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e — 3 lbs carbon, Case of 2\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eSizes marked \"additional size\" are stocked by RTF beyond Koch's PB-1202 standard published sizes (24x24x12, 20x24x12, 12x24x12). The 20x20x12 and 20x25x12 dimensions use the same CPS construction at proportional carbon load.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eCelbond Particulate Structure (CPS) technology\u003c\/h3\u003e\u003cp\u003eCPS technology is the key differentiator that distinguishes DuraKleen from standard honeycomb carbon filters:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon distribution:\u003c\/strong\u003e Activated carbon is suspended in uniform distribution throughout a tightly bonded three-dimensional network of bicomponent fibers — no honeycomb cells or loose granular carbon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon mesh size:\u003c\/strong\u003e \u003cstrong\u003e20x50 mesh\u003c\/strong\u003e — small mesh = high efficiency. Smaller carbon particles expose more surface area to the airstream per unit volume.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon load:\u003c\/strong\u003e 500 gsm. The combination of small mesh and high gsm gives DuraKleen an outstanding balance of first-pass removal efficiency, filter life, and low pressure drop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBonding efficiency:\u003c\/strong\u003e The fiber-to-carbon bond obstructs only approximately 1% of the carbon's surface area, leaving roughly 99% available for gas adsorption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTortuous airflow path:\u003c\/strong\u003e Gas contaminants pass through tortuous pathways inside the CPS media, ensuring intimate contact between contaminant molecules and the carbon adsorption surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEliminates post-filtration:\u003c\/strong\u003e The fiber-to-carbon bond eliminates the need for post-filtration in most applications — the carbon stays where it's placed and doesn't shed downstream.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDuraKleen Single Header MERV 15 construction\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e Extended-surface V-cell carbon filter, 12″ deep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia technology:\u003c\/strong\u003e Celbond Particulate Structure (CPS) — activated carbon suspended in 3D bicomponent fiber network\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e 500 gsm of 20x50 mesh activated carbon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial resistance:\u003c\/strong\u003e \u003cstrong\u003e0.24″ w.g.\u003c\/strong\u003e @ 500 FPM — substantially lower than DuraPure honeycomb-cell filters at the same face velocity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single Header — mounting flange configuration: single header\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV rating:\u003c\/strong\u003e MERV 15\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable depths:\u003c\/strong\u003e 12″ only (deep V-cell architecture)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolishing filter:\u003c\/strong\u003e Koch positions DuraKleen as an \u003cem\u003e\"excellent polishing filter for high contaminant concentrations.\"\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisposability:\u003c\/strong\u003e Single-use disposable; not washable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch published dimensions and media area (PB-1202)\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eNominal Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eActual Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eInitial Resistance @ 500 FPM\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eMedia Area\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e23.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e55 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e19.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e44 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e11.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e24 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe table above documents Koch's standard published sizes per PB-1202. RTF also stocks 20″x20″x12″ and 20″x25″x12″ in the same DuraKleen CPS construction; carbon load and media area scale proportionally with face dimensions.\u003c\/p\u003e\u003ch3\u003eAirborne molecular contamination (AMC) and polishing filtration\u003c\/h3\u003e\u003cp\u003eDuraKleen is engineered for environments where gas-phase contaminants need to be reduced to \u003cstrong\u003esub-ppm levels\u003c\/strong\u003e — concentrations where standard carbon filtration starts to lose effectiveness. Typical AMC applications include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCleanrooms and semiconductor manufacturing:\u003c\/strong\u003e trace amines, acids, and organics that interfere with photolithography and surface chemistry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuseum and archive preservation:\u003c\/strong\u003e trace acids and oxidants that degrade paper, photographs, textiles, and artwork over time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePharmaceutical manufacturing:\u003c\/strong\u003e trace contaminants that affect product purity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHospital sensitive areas:\u003c\/strong\u003e sub-ppm gas-phase contaminants in operating theaters, isolation rooms, and laboratory spaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolishing filtration:\u003c\/strong\u003e Used downstream of higher-capacity filters (such as DuraPure) to reduce residual contaminant concentrations to levels that primary filters can't reach efficiently\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDuraKleen is also \u003cstrong\u003eavailable in other media options for the removal of specific types of amines and acid gases\u003c\/strong\u003e — \u003ca href=\"\/pages\/quote\"\u003erequest a quote\u003c\/a\u003e with your target contaminant profile.\u003c\/p\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eDuraKleen is specified for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChemical Storage Rooms\u003c\/li\u003e\n\u003cli\u003eHospitals\u003c\/li\u003e\n\u003cli\u003eSports Arenas\u003c\/li\u003e\n\u003cli\u003eLaboratories\u003c\/li\u003e\n\u003cli\u003eAirports\u003c\/li\u003e\n\u003cli\u003eCasinos\u003c\/li\u003e\n\u003cli\u003eMuseums and Archives\u003c\/li\u003e\n\u003cli\u003eIndustrial Facilities\u003c\/li\u003e\n\u003cli\u003ePharmaceutical\u003c\/li\u003e\n\u003cli\u003eCommercial Buildings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoosing your DuraKleen configuration\u003c\/h3\u003e\u003cp\u003eDuraKleen ships in five configurations for housing compatibility and integrated particulate filtration capacity. The choice depends on your existing filter housing and what level of integrated particulate capture you need alongside the gas-phase performance:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-single-header-merv-8-cps-carbon-filter\"\u003eDuraKleen Single Header MERV 8\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-no-header-box-style-merv-8-cps-carbon-filter\"\u003eDuraKleen No Header Box Style MERV 8\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-no-header-box-style-merv-15-cps-carbon-filter\"\u003eDuraKleen No Header Box Style MERV 15\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-double-header-merv-8-cps-carbon-filter\"\u003eDuraKleen Double Header MERV 8\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you're unsure which configuration fits your existing filter housing, \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e with your housing make\/model and we'll help you specify the right header configuration. The MERV rating reflects the integrated particulate filtration capacity of the configuration; all configurations share the same Koch CPS gas-phase carbon performance.\u003c\/p\u003e\u003ch3\u003eDuraKleen vs DuraPure — choosing your gas-phase platform\u003c\/h3\u003e\u003cp\u003eKoch produces two extended-surface 12″-deep carbon filter platforms. They serve different gas-phase use cases:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuraKleen (this product family):\u003c\/strong\u003e CPS bicomponent fiber media with 500 gsm 20x50 mesh carbon. Initial resistance \u003cstrong\u003e0.24″ w.g. @ 500 FPM\u003c\/strong\u003e. Engineered for \u003cstrong\u003esub-ppm AMC removal\u003c\/strong\u003e and polishing filtration. Koch's breakthrough analysis shows DuraKleen outperforming honeycomb carbon designs at low concentration levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/koch-durapure-standard-capacity-v-cell-carbon-filter\"\u003eDuraPure Standard Capacity\u003c\/a\u003e\u003c\/strong\u003e and \u003cstrong\u003e\u003ca href=\"\/products\/koch-durapure-high-capacity-v-cell-carbon-filter\"\u003eDuraPure High Capacity\u003c\/a\u003e:\u003c\/strong\u003e Honeycomb carbon cells with premium coconut shell granular carbon. 18–26 lbs carbon load per filter, 0.34–0.74″ w.g. initial resistance. Engineered for \u003cstrong\u003ehigh-volume gas-phase capacity\u003c\/strong\u003e at moderate contaminant concentrations — specified for airports, industrial facilities, chemical plants, office buildings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor lower-depth gas-phase filtration in 1″\/2″\/4″ pleated panel form factors, see the Koch \u003ca href=\"\/products\/koch-odorkleen-es-merv-8-carbon-particulate-filter\"\u003eOdorKleen ES\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-250-carbonweb-merv-8-carbon-particulate-filter\"\u003eOdorKleen 250\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-200-m13-merv-13-carbon-particulate-filter\"\u003eOdorKleen 200\/M13\u003c\/a\u003e, and \u003ca href=\"\/products\/koch-odorkleen-600-carbonweb-merv-10-carbon-particulate-filter\"\u003eOdorKleen 600\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eSizing and ordering notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes are nominal.\u003c\/strong\u003e Per Koch PB-1202, actual dimensions are slightly less: 24x24x12 nominal = 23.38″ x 23.38″ x 11.50″ actual; same 1\/2″-1″ pattern across sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″ deep filters require deep filter racks.\u003c\/strong\u003e Verify your filter housing accommodates 12″ depth before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration is housing-specific.\u003c\/strong\u003e This product is the Single Header configuration. If your housing requires a different header type, see the \u003cstrong\u003eChoosing your DuraKleen configuration\u003c\/strong\u003e section above for cross-links to the other configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\"Call for Quote\" sizes:\u003c\/strong\u003e Some configuration\/size combinations are special-order only. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e for these or for facility-scale orders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecialty media:\u003c\/strong\u003e DuraKleen is also available with specialized media for amines and acid gases. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e with your target contaminant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement schedule:\u003c\/strong\u003e Drive by pressure drop curve and breakthrough monitoring. For sub-ppm AMC applications, monitor downstream concentration directly — pressure drop alone may not signal breakthrough at trace contaminant levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon disposal:\u003c\/strong\u003e Spent CPS media may have specific disposal requirements depending on captured contaminants. Follow your local hazardous waste regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch product literature\u003c\/h3\u003e\u003cp\u003eDetailed product specifications, Dynamic Breakthrough Analysis, and complete performance data for Koch DuraKleen are published in \u003cstrong\u003eKoch Bulletin PB-1202\u003c\/strong\u003e: \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/DuraKleen.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDuraKleen Product Specification PDF\u003c\/a\u003e (Koch Filter Corporation). For specialty media variants targeting amines or acid gases, consult Koch Filter Corporation (\u003ca href=\"https:\/\/www.kochfilter.com\/\" target=\"_blank\" rel=\"noopener\"\u003ekochfilter.com\u003c\/a\u003e) or \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"24\"x24\"x12\" (Case of 1)","offer_id":44119158325370,"sku":"112-689-242412","price":1499.85,"currency_code":"USD","in_stock":true},{"title":"20\"x25\"x12\" (Call for Quote)","offer_id":44119158358138,"sku":"112-689-015","price":0.0,"currency_code":"USD","in_stock":false},{"title":"20\"x24\"x12\" (Case of 1)","offer_id":44119158390906,"sku":"112-689-202412","price":1341.56,"currency_code":"USD","in_stock":true},{"title":"20\"x20\"x12\" (Case of 1)","offer_id":44119158423674,"sku":"112-689-202012","price":1281.23,"currency_code":"USD","in_stock":true},{"title":"12\"x24\"x12\" (Case of 2)","offer_id":44119158456442,"sku":"112-689-122412","price":2268.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_284c7956-5ed1-4cd2-9b6c-c55c55bd585f.png?v=1777864367"},{"product_id":"koch-durakleen-no-header-box-style-merv-8-cps-carbon-filter","title":"Koch DuraKleen No Header Box Style MERV 8 (CPS Carbon V-Cell Gas-Phase Filter)","description":"\u003cp\u003ePer Koch Bulletin \u003cstrong\u003ePB-1202\u003c\/strong\u003e, the Koch \u003cstrong\u003eDuraKleen No Header Box Style MERV 8\u003c\/strong\u003e is a \u003cstrong\u003ehigh-efficiency gas-phase V-cell carbon filter\u003c\/strong\u003e engineered for environments with \u003cstrong\u003eairborne molecular contamination (AMC)\u003c\/strong\u003e at sub-ppm levels. The DuraKleen uses Koch's patented \u003cstrong\u003eCelbond Particulate Structure (CPS) technology\u003c\/strong\u003e, suspending \u003cstrong\u003e500 gsm of 20x50 mesh activated carbon\u003c\/strong\u003e in a tightly bonded three-dimensional network of bicomponent fibers. This No Header (Box Style) configuration is rated \u003cstrong\u003eMERV 8\u003c\/strong\u003e and is sized to fit sealed box-style filter housings.\u003c\/p\u003e\u003ch3\u003eWhat you get: V-cell gas-phase carbon filters, sold by the case\u003c\/h3\u003e\u003cp\u003eEach variant is a complete DuraKleen No Header Box Style MERV 8 V-cell filter with the CPS-technology carbon media. All variants are \u003cstrong\u003e12″ deep\u003c\/strong\u003e; pricing varies by face dimensions:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e — 6 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x25″x12″\u003c\/strong\u003e — \u003cem\u003eadditional size\u003c\/em\u003e — 5 lbs carbon, available by quote. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e — 6 lbs carbon, available by quote. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x20″x12″\u003c\/strong\u003e — \u003cem\u003eadditional size\u003c\/em\u003e — 3.7 lbs carbon, available by quote. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e — 3 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eSizes marked \"additional size\" are stocked by RTF beyond Koch's PB-1202 standard published sizes (24x24x12, 20x24x12, 12x24x12). The 20x20x12 and 20x25x12 dimensions use the same CPS construction at proportional carbon load.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eCelbond Particulate Structure (CPS) technology\u003c\/h3\u003e\u003cp\u003eCPS technology is the key differentiator that distinguishes DuraKleen from standard honeycomb carbon filters:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon distribution:\u003c\/strong\u003e Activated carbon is suspended in uniform distribution throughout a tightly bonded three-dimensional network of bicomponent fibers — no honeycomb cells or loose granular carbon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon mesh size:\u003c\/strong\u003e \u003cstrong\u003e20x50 mesh\u003c\/strong\u003e — small mesh = high efficiency. Smaller carbon particles expose more surface area to the airstream per unit volume.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon load:\u003c\/strong\u003e 500 gsm. The combination of small mesh and high gsm gives DuraKleen an outstanding balance of first-pass removal efficiency, filter life, and low pressure drop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBonding efficiency:\u003c\/strong\u003e The fiber-to-carbon bond obstructs only approximately 1% of the carbon's surface area, leaving roughly 99% available for gas adsorption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTortuous airflow path:\u003c\/strong\u003e Gas contaminants pass through tortuous pathways inside the CPS media, ensuring intimate contact between contaminant molecules and the carbon adsorption surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEliminates post-filtration:\u003c\/strong\u003e The fiber-to-carbon bond eliminates the need for post-filtration in most applications — the carbon stays where it's placed and doesn't shed downstream.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDuraKleen No Header Box Style MERV 8 construction\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e Extended-surface V-cell carbon filter, 12″ deep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia technology:\u003c\/strong\u003e Celbond Particulate Structure (CPS) — activated carbon suspended in 3D bicomponent fiber network\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e 500 gsm of 20x50 mesh activated carbon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial resistance:\u003c\/strong\u003e \u003cstrong\u003e0.24″ w.g.\u003c\/strong\u003e @ 500 FPM — substantially lower than DuraPure honeycomb-cell filters at the same face velocity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header (Box Style) — fits sealed box-style filter housings without flanges\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV rating:\u003c\/strong\u003e MERV 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable depths:\u003c\/strong\u003e 12″ only (deep V-cell architecture)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolishing filter:\u003c\/strong\u003e Koch positions DuraKleen as an \u003cem\u003e\"excellent polishing filter for high contaminant concentrations.\"\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisposability:\u003c\/strong\u003e Single-use disposable; not washable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch published dimensions and media area (PB-1202)\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eNominal Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eActual Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eInitial Resistance @ 500 FPM\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eMedia Area\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e23.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e55 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e19.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e44 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e11.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e24 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe table above documents Koch's standard published sizes per PB-1202. RTF also stocks 20″x20″x12″ and 20″x25″x12″ in the same DuraKleen CPS construction; carbon load and media area scale proportionally with face dimensions.\u003c\/p\u003e\u003ch3\u003eAirborne molecular contamination (AMC) and polishing filtration\u003c\/h3\u003e\u003cp\u003eDuraKleen is engineered for environments where gas-phase contaminants need to be reduced to \u003cstrong\u003esub-ppm levels\u003c\/strong\u003e — concentrations where standard carbon filtration starts to lose effectiveness. Typical AMC applications include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCleanrooms and semiconductor manufacturing:\u003c\/strong\u003e trace amines, acids, and organics that interfere with photolithography and surface chemistry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuseum and archive preservation:\u003c\/strong\u003e trace acids and oxidants that degrade paper, photographs, textiles, and artwork over time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePharmaceutical manufacturing:\u003c\/strong\u003e trace contaminants that affect product purity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHospital sensitive areas:\u003c\/strong\u003e sub-ppm gas-phase contaminants in operating theaters, isolation rooms, and laboratory spaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolishing filtration:\u003c\/strong\u003e Used downstream of higher-capacity filters (such as DuraPure) to reduce residual contaminant concentrations to levels that primary filters can't reach efficiently\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDuraKleen is also \u003cstrong\u003eavailable in other media options for the removal of specific types of amines and acid gases\u003c\/strong\u003e — \u003ca href=\"\/pages\/quote\"\u003erequest a quote\u003c\/a\u003e with your target contaminant profile.\u003c\/p\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eDuraKleen is specified for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChemical Storage Rooms\u003c\/li\u003e\n\u003cli\u003eHospitals\u003c\/li\u003e\n\u003cli\u003eSports Arenas\u003c\/li\u003e\n\u003cli\u003eLaboratories\u003c\/li\u003e\n\u003cli\u003eAirports\u003c\/li\u003e\n\u003cli\u003eCasinos\u003c\/li\u003e\n\u003cli\u003eMuseums and Archives\u003c\/li\u003e\n\u003cli\u003eIndustrial Facilities\u003c\/li\u003e\n\u003cli\u003ePharmaceutical\u003c\/li\u003e\n\u003cli\u003eCommercial Buildings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoosing your DuraKleen configuration\u003c\/h3\u003e\u003cp\u003eDuraKleen ships in five configurations for housing compatibility and integrated particulate filtration capacity. The choice depends on your existing filter housing and what level of integrated particulate capture you need alongside the gas-phase performance:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-single-header-merv-8-cps-carbon-filter\"\u003eDuraKleen Single Header MERV 8\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-single-header-merv-15-cps-carbon-filter\"\u003eDuraKleen Single Header MERV 15\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-no-header-box-style-merv-15-cps-carbon-filter\"\u003eDuraKleen No Header Box Style MERV 15\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-double-header-merv-8-cps-carbon-filter\"\u003eDuraKleen Double Header MERV 8\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you're unsure which configuration fits your existing filter housing, \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e with your housing make\/model and we'll help you specify the right header configuration. The MERV rating reflects the integrated particulate filtration capacity of the configuration; all configurations share the same Koch CPS gas-phase carbon performance.\u003c\/p\u003e\u003ch3\u003eDuraKleen vs DuraPure — choosing your gas-phase platform\u003c\/h3\u003e\u003cp\u003eKoch produces two extended-surface 12″-deep carbon filter platforms. They serve different gas-phase use cases:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuraKleen (this product family):\u003c\/strong\u003e CPS bicomponent fiber media with 500 gsm 20x50 mesh carbon. Initial resistance \u003cstrong\u003e0.24″ w.g. @ 500 FPM\u003c\/strong\u003e. Engineered for \u003cstrong\u003esub-ppm AMC removal\u003c\/strong\u003e and polishing filtration. Koch's breakthrough analysis shows DuraKleen outperforming honeycomb carbon designs at low concentration levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/koch-durapure-standard-capacity-v-cell-carbon-filter\"\u003eDuraPure Standard Capacity\u003c\/a\u003e\u003c\/strong\u003e and \u003cstrong\u003e\u003ca href=\"\/products\/koch-durapure-high-capacity-v-cell-carbon-filter\"\u003eDuraPure High Capacity\u003c\/a\u003e:\u003c\/strong\u003e Honeycomb carbon cells with premium coconut shell granular carbon. 18–26 lbs carbon load per filter, 0.34–0.74″ w.g. initial resistance. Engineered for \u003cstrong\u003ehigh-volume gas-phase capacity\u003c\/strong\u003e at moderate contaminant concentrations — specified for airports, industrial facilities, chemical plants, office buildings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor lower-depth gas-phase filtration in 1″\/2″\/4″ pleated panel form factors, see the Koch \u003ca href=\"\/products\/koch-odorkleen-es-merv-8-carbon-particulate-filter\"\u003eOdorKleen ES\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-250-carbonweb-merv-8-carbon-particulate-filter\"\u003eOdorKleen 250\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-200-m13-merv-13-carbon-particulate-filter\"\u003eOdorKleen 200\/M13\u003c\/a\u003e, and \u003ca href=\"\/products\/koch-odorkleen-600-carbonweb-merv-10-carbon-particulate-filter\"\u003eOdorKleen 600\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eSizing and ordering notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes are nominal.\u003c\/strong\u003e Per Koch PB-1202, actual dimensions are slightly less: 24x24x12 nominal = 23.38″ x 23.38″ x 11.50″ actual; same 1\/2″-1″ pattern across sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″ deep filters require deep filter racks.\u003c\/strong\u003e Verify your filter housing accommodates 12″ depth before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration is housing-specific.\u003c\/strong\u003e This product is the No Header (Box Style) configuration. If your housing requires a different header type, see the \u003cstrong\u003eChoosing your DuraKleen configuration\u003c\/strong\u003e section above for cross-links to the other configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\"Call for Quote\" sizes:\u003c\/strong\u003e Some configuration\/size combinations are special-order only. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e for these or for facility-scale orders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecialty media:\u003c\/strong\u003e DuraKleen is also available with specialized media for amines and acid gases. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e with your target contaminant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement schedule:\u003c\/strong\u003e Drive by pressure drop curve and breakthrough monitoring. For sub-ppm AMC applications, monitor downstream concentration directly — pressure drop alone may not signal breakthrough at trace contaminant levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon disposal:\u003c\/strong\u003e Spent CPS media may have specific disposal requirements depending on captured contaminants. Follow your local hazardous waste regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch product literature\u003c\/h3\u003e\u003cp\u003eDetailed product specifications, Dynamic Breakthrough Analysis, and complete performance data for Koch DuraKleen are published in \u003cstrong\u003eKoch Bulletin PB-1202\u003c\/strong\u003e: \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/DuraKleen.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDuraKleen Product Specification PDF\u003c\/a\u003e (Koch Filter Corporation). For specialty media variants targeting amines or acid gases, consult Koch Filter Corporation (\u003ca href=\"https:\/\/www.kochfilter.com\/\" target=\"_blank\" rel=\"noopener\"\u003ekochfilter.com\u003c\/a\u003e) or \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"24\"x24\"x12\" (Case of 1)","offer_id":44119158489210,"sku":"112-687-001","price":1200.68,"currency_code":"USD","in_stock":true},{"title":"20\"x25\"x12\" (Call for Quote)","offer_id":44119158521978,"sku":"112-687-202512","price":0.0,"currency_code":"USD","in_stock":false},{"title":"20\"x24\"x12\" (Call for Quote)","offer_id":44119158554746,"sku":"112-687-202412","price":0.0,"currency_code":"USD","in_stock":false},{"title":"20\"x20\"x12\" (Call for Quote)","offer_id":44119158587514,"sku":"112-687-202012","price":0.0,"currency_code":"USD","in_stock":false},{"title":"12\"x24\"x12\" (Case of 1)","offer_id":44119158620282,"sku":"112-687-002","price":958.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_0fdb56a6-9a1b-448a-8830-b7558dbb7618.png?v=1777864374"},{"product_id":"koch-durakleen-no-header-box-style-merv-15-cps-carbon-filter","title":"Koch DuraKleen No Header Box Style MERV 15 (CPS Carbon V-Cell Gas-Phase Filter)","description":"\u003cp\u003ePer Koch Bulletin \u003cstrong\u003ePB-1202\u003c\/strong\u003e, the Koch \u003cstrong\u003eDuraKleen No Header Box Style MERV 15\u003c\/strong\u003e is a \u003cstrong\u003ehigh-efficiency gas-phase V-cell carbon filter\u003c\/strong\u003e engineered for environments with \u003cstrong\u003eairborne molecular contamination (AMC)\u003c\/strong\u003e at sub-ppm levels. The DuraKleen uses Koch's patented \u003cstrong\u003eCelbond Particulate Structure (CPS) technology\u003c\/strong\u003e, suspending \u003cstrong\u003e500 gsm of 20x50 mesh activated carbon\u003c\/strong\u003e in a tightly bonded three-dimensional network of bicomponent fibers. This No Header (Box Style) configuration is rated \u003cstrong\u003eMERV 15\u003c\/strong\u003e and is sized to fit sealed box-style filter housings.\u003c\/p\u003e\u003ch3\u003eWhat you get: V-cell gas-phase carbon filters, sold by the case\u003c\/h3\u003e\u003cp\u003eEach variant is a complete DuraKleen No Header Box Style MERV 15 V-cell filter with the CPS-technology carbon media. All variants are \u003cstrong\u003e12″ deep\u003c\/strong\u003e; pricing varies by face dimensions:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e — 6 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x25″x12″\u003c\/strong\u003e — \u003cem\u003eadditional size\u003c\/em\u003e — 5 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e — 6 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x20″x12″\u003c\/strong\u003e — \u003cem\u003eadditional size\u003c\/em\u003e — 3.7 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e — 3 lbs carbon, available by quote. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eSizes marked \"additional size\" are stocked by RTF beyond Koch's PB-1202 standard published sizes (24x24x12, 20x24x12, 12x24x12). The 20x20x12 and 20x25x12 dimensions use the same CPS construction at proportional carbon load.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eCelbond Particulate Structure (CPS) technology\u003c\/h3\u003e\u003cp\u003eCPS technology is the key differentiator that distinguishes DuraKleen from standard honeycomb carbon filters:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon distribution:\u003c\/strong\u003e Activated carbon is suspended in uniform distribution throughout a tightly bonded three-dimensional network of bicomponent fibers — no honeycomb cells or loose granular carbon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon mesh size:\u003c\/strong\u003e \u003cstrong\u003e20x50 mesh\u003c\/strong\u003e — small mesh = high efficiency. Smaller carbon particles expose more surface area to the airstream per unit volume.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon load:\u003c\/strong\u003e 500 gsm. The combination of small mesh and high gsm gives DuraKleen an outstanding balance of first-pass removal efficiency, filter life, and low pressure drop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBonding efficiency:\u003c\/strong\u003e The fiber-to-carbon bond obstructs only approximately 1% of the carbon's surface area, leaving roughly 99% available for gas adsorption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTortuous airflow path:\u003c\/strong\u003e Gas contaminants pass through tortuous pathways inside the CPS media, ensuring intimate contact between contaminant molecules and the carbon adsorption surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEliminates post-filtration:\u003c\/strong\u003e The fiber-to-carbon bond eliminates the need for post-filtration in most applications — the carbon stays where it's placed and doesn't shed downstream.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDuraKleen No Header Box Style MERV 15 construction\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e Extended-surface V-cell carbon filter, 12″ deep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia technology:\u003c\/strong\u003e Celbond Particulate Structure (CPS) — activated carbon suspended in 3D bicomponent fiber network\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e 500 gsm of 20x50 mesh activated carbon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial resistance:\u003c\/strong\u003e \u003cstrong\u003e0.24″ w.g.\u003c\/strong\u003e @ 500 FPM — substantially lower than DuraPure honeycomb-cell filters at the same face velocity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e No Header (Box Style) — fits sealed box-style filter housings without flanges\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV rating:\u003c\/strong\u003e MERV 15\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable depths:\u003c\/strong\u003e 12″ only (deep V-cell architecture)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolishing filter:\u003c\/strong\u003e Koch positions DuraKleen as an \u003cem\u003e\"excellent polishing filter for high contaminant concentrations.\"\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisposability:\u003c\/strong\u003e Single-use disposable; not washable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch published dimensions and media area (PB-1202)\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eNominal Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eActual Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eInitial Resistance @ 500 FPM\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eMedia Area\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e23.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e55 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e19.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e44 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e11.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e24 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe table above documents Koch's standard published sizes per PB-1202. RTF also stocks 20″x20″x12″ and 20″x25″x12″ in the same DuraKleen CPS construction; carbon load and media area scale proportionally with face dimensions.\u003c\/p\u003e\u003ch3\u003eAirborne molecular contamination (AMC) and polishing filtration\u003c\/h3\u003e\u003cp\u003eDuraKleen is engineered for environments where gas-phase contaminants need to be reduced to \u003cstrong\u003esub-ppm levels\u003c\/strong\u003e — concentrations where standard carbon filtration starts to lose effectiveness. Typical AMC applications include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCleanrooms and semiconductor manufacturing:\u003c\/strong\u003e trace amines, acids, and organics that interfere with photolithography and surface chemistry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuseum and archive preservation:\u003c\/strong\u003e trace acids and oxidants that degrade paper, photographs, textiles, and artwork over time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePharmaceutical manufacturing:\u003c\/strong\u003e trace contaminants that affect product purity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHospital sensitive areas:\u003c\/strong\u003e sub-ppm gas-phase contaminants in operating theaters, isolation rooms, and laboratory spaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolishing filtration:\u003c\/strong\u003e Used downstream of higher-capacity filters (such as DuraPure) to reduce residual contaminant concentrations to levels that primary filters can't reach efficiently\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDuraKleen is also \u003cstrong\u003eavailable in other media options for the removal of specific types of amines and acid gases\u003c\/strong\u003e — \u003ca href=\"\/pages\/quote\"\u003erequest a quote\u003c\/a\u003e with your target contaminant profile.\u003c\/p\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eDuraKleen is specified for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChemical Storage Rooms\u003c\/li\u003e\n\u003cli\u003eHospitals\u003c\/li\u003e\n\u003cli\u003eSports Arenas\u003c\/li\u003e\n\u003cli\u003eLaboratories\u003c\/li\u003e\n\u003cli\u003eAirports\u003c\/li\u003e\n\u003cli\u003eCasinos\u003c\/li\u003e\n\u003cli\u003eMuseums and Archives\u003c\/li\u003e\n\u003cli\u003eIndustrial Facilities\u003c\/li\u003e\n\u003cli\u003ePharmaceutical\u003c\/li\u003e\n\u003cli\u003eCommercial Buildings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoosing your DuraKleen configuration\u003c\/h3\u003e\u003cp\u003eDuraKleen ships in five configurations for housing compatibility and integrated particulate filtration capacity. The choice depends on your existing filter housing and what level of integrated particulate capture you need alongside the gas-phase performance:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-single-header-merv-8-cps-carbon-filter\"\u003eDuraKleen Single Header MERV 8\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-single-header-merv-15-cps-carbon-filter\"\u003eDuraKleen Single Header MERV 15\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-no-header-box-style-merv-8-cps-carbon-filter\"\u003eDuraKleen No Header Box Style MERV 8\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-double-header-merv-8-cps-carbon-filter\"\u003eDuraKleen Double Header MERV 8\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you're unsure which configuration fits your existing filter housing, \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e with your housing make\/model and we'll help you specify the right header configuration. The MERV rating reflects the integrated particulate filtration capacity of the configuration; all configurations share the same Koch CPS gas-phase carbon performance.\u003c\/p\u003e\u003ch3\u003eDuraKleen vs DuraPure — choosing your gas-phase platform\u003c\/h3\u003e\u003cp\u003eKoch produces two extended-surface 12″-deep carbon filter platforms. They serve different gas-phase use cases:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuraKleen (this product family):\u003c\/strong\u003e CPS bicomponent fiber media with 500 gsm 20x50 mesh carbon. Initial resistance \u003cstrong\u003e0.24″ w.g. @ 500 FPM\u003c\/strong\u003e. Engineered for \u003cstrong\u003esub-ppm AMC removal\u003c\/strong\u003e and polishing filtration. Koch's breakthrough analysis shows DuraKleen outperforming honeycomb carbon designs at low concentration levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/koch-durapure-standard-capacity-v-cell-carbon-filter\"\u003eDuraPure Standard Capacity\u003c\/a\u003e\u003c\/strong\u003e and \u003cstrong\u003e\u003ca href=\"\/products\/koch-durapure-high-capacity-v-cell-carbon-filter\"\u003eDuraPure High Capacity\u003c\/a\u003e:\u003c\/strong\u003e Honeycomb carbon cells with premium coconut shell granular carbon. 18–26 lbs carbon load per filter, 0.34–0.74″ w.g. initial resistance. Engineered for \u003cstrong\u003ehigh-volume gas-phase capacity\u003c\/strong\u003e at moderate contaminant concentrations — specified for airports, industrial facilities, chemical plants, office buildings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor lower-depth gas-phase filtration in 1″\/2″\/4″ pleated panel form factors, see the Koch \u003ca href=\"\/products\/koch-odorkleen-es-merv-8-carbon-particulate-filter\"\u003eOdorKleen ES\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-250-carbonweb-merv-8-carbon-particulate-filter\"\u003eOdorKleen 250\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-200-m13-merv-13-carbon-particulate-filter\"\u003eOdorKleen 200\/M13\u003c\/a\u003e, and \u003ca href=\"\/products\/koch-odorkleen-600-carbonweb-merv-10-carbon-particulate-filter\"\u003eOdorKleen 600\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eSizing and ordering notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes are nominal.\u003c\/strong\u003e Per Koch PB-1202, actual dimensions are slightly less: 24x24x12 nominal = 23.38″ x 23.38″ x 11.50″ actual; same 1\/2″-1″ pattern across sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″ deep filters require deep filter racks.\u003c\/strong\u003e Verify your filter housing accommodates 12″ depth before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration is housing-specific.\u003c\/strong\u003e This product is the No Header (Box Style) configuration. If your housing requires a different header type, see the \u003cstrong\u003eChoosing your DuraKleen configuration\u003c\/strong\u003e section above for cross-links to the other configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\"Call for Quote\" sizes:\u003c\/strong\u003e Some configuration\/size combinations are special-order only. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e for these or for facility-scale orders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecialty media:\u003c\/strong\u003e DuraKleen is also available with specialized media for amines and acid gases. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e with your target contaminant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement schedule:\u003c\/strong\u003e Drive by pressure drop curve and breakthrough monitoring. For sub-ppm AMC applications, monitor downstream concentration directly — pressure drop alone may not signal breakthrough at trace contaminant levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon disposal:\u003c\/strong\u003e Spent CPS media may have specific disposal requirements depending on captured contaminants. Follow your local hazardous waste regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch product literature\u003c\/h3\u003e\u003cp\u003eDetailed product specifications, Dynamic Breakthrough Analysis, and complete performance data for Koch DuraKleen are published in \u003cstrong\u003eKoch Bulletin PB-1202\u003c\/strong\u003e: \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/DuraKleen.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDuraKleen Product Specification PDF\u003c\/a\u003e (Koch Filter Corporation). For specialty media variants targeting amines or acid gases, consult Koch Filter Corporation (\u003ca href=\"https:\/\/www.kochfilter.com\/\" target=\"_blank\" rel=\"noopener\"\u003ekochfilter.com\u003c\/a\u003e) or \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"24\"x24\"x12\" (Case of 1)","offer_id":44119158653050,"sku":"112-684-242412","price":1413.72,"currency_code":"USD","in_stock":true},{"title":"20\"x25\"x12\" (Case of 1)","offer_id":44119158685818,"sku":"112-684-202512","price":1432.28,"currency_code":"USD","in_stock":true},{"title":"20\"x24\"x12\" (Case of 1)","offer_id":44119158718586,"sku":"112-684-202412","price":1357.53,"currency_code":"USD","in_stock":true},{"title":"20\"x20\"x12\" (Case of 1)","offer_id":44119158751354,"sku":"112-684-202012","price":1295.49,"currency_code":"USD","in_stock":true},{"title":"12\"x24\"x12\" (Call for Quote)","offer_id":44119158784122,"sku":"112-684-122412","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_e60ac86e-2cc4-41fb-a5df-166f10538130.png?v=1777864380"},{"product_id":"koch-durakleen-double-header-merv-8-cps-carbon-filter","title":"Koch DuraKleen Double Header MERV 8 (CPS Carbon V-Cell Gas-Phase Filter)","description":"\u003cp\u003ePer Koch Bulletin \u003cstrong\u003ePB-1202\u003c\/strong\u003e, the Koch \u003cstrong\u003eDuraKleen Double Header MERV 8\u003c\/strong\u003e is a \u003cstrong\u003ehigh-efficiency gas-phase V-cell carbon filter\u003c\/strong\u003e engineered for environments with \u003cstrong\u003eairborne molecular contamination (AMC)\u003c\/strong\u003e at sub-ppm levels. The DuraKleen uses Koch's patented \u003cstrong\u003eCelbond Particulate Structure (CPS) technology\u003c\/strong\u003e, suspending \u003cstrong\u003e500 gsm of 20x50 mesh activated carbon\u003c\/strong\u003e in a tightly bonded three-dimensional network of bicomponent fibers. This Double Header configuration is rated \u003cstrong\u003eMERV 8\u003c\/strong\u003e and is sized to fit double header housing configurations.\u003c\/p\u003e\u003ch3\u003eWhat you get: V-cell gas-phase carbon filters, sold by the case\u003c\/h3\u003e\u003cp\u003eEach variant is a complete DuraKleen Double Header MERV 8 V-cell filter with the CPS-technology carbon media. All variants are \u003cstrong\u003e12″ deep\u003c\/strong\u003e; pricing varies by face dimensions:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e — 6 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x25″x12″\u003c\/strong\u003e — \u003cem\u003eadditional size\u003c\/em\u003e — 5 lbs carbon, available by quote. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e — 6 lbs carbon, available by quote. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x20″x12″\u003c\/strong\u003e — \u003cem\u003eadditional size\u003c\/em\u003e — 3.7 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e — 3 lbs carbon, Case of 2\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eSizes marked \"additional size\" are stocked by RTF beyond Koch's PB-1202 standard published sizes (24x24x12, 20x24x12, 12x24x12). The 20x20x12 and 20x25x12 dimensions use the same CPS construction at proportional carbon load.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eCelbond Particulate Structure (CPS) technology\u003c\/h3\u003e\u003cp\u003eCPS technology is the key differentiator that distinguishes DuraKleen from standard honeycomb carbon filters:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon distribution:\u003c\/strong\u003e Activated carbon is suspended in uniform distribution throughout a tightly bonded three-dimensional network of bicomponent fibers — no honeycomb cells or loose granular carbon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon mesh size:\u003c\/strong\u003e \u003cstrong\u003e20x50 mesh\u003c\/strong\u003e — small mesh = high efficiency. Smaller carbon particles expose more surface area to the airstream per unit volume.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon load:\u003c\/strong\u003e 500 gsm. The combination of small mesh and high gsm gives DuraKleen an outstanding balance of first-pass removal efficiency, filter life, and low pressure drop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBonding efficiency:\u003c\/strong\u003e The fiber-to-carbon bond obstructs only approximately 1% of the carbon's surface area, leaving roughly 99% available for gas adsorption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTortuous airflow path:\u003c\/strong\u003e Gas contaminants pass through tortuous pathways inside the CPS media, ensuring intimate contact between contaminant molecules and the carbon adsorption surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEliminates post-filtration:\u003c\/strong\u003e The fiber-to-carbon bond eliminates the need for post-filtration in most applications — the carbon stays where it's placed and doesn't shed downstream.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDuraKleen Double Header MERV 8 construction\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e Extended-surface V-cell carbon filter, 12″ deep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia technology:\u003c\/strong\u003e Celbond Particulate Structure (CPS) — activated carbon suspended in 3D bicomponent fiber network\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e 500 gsm of 20x50 mesh activated carbon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial resistance:\u003c\/strong\u003e \u003cstrong\u003e0.24″ w.g.\u003c\/strong\u003e @ 500 FPM — substantially lower than DuraPure honeycomb-cell filters at the same face velocity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Double Header — mounting flange configuration: double header\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV rating:\u003c\/strong\u003e MERV 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable depths:\u003c\/strong\u003e 12″ only (deep V-cell architecture)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolishing filter:\u003c\/strong\u003e Koch positions DuraKleen as an \u003cem\u003e\"excellent polishing filter for high contaminant concentrations.\"\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisposability:\u003c\/strong\u003e Single-use disposable; not washable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch published dimensions and media area (PB-1202)\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eNominal Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eActual Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eInitial Resistance @ 500 FPM\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eMedia Area\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e23.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e55 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e19.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e44 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e11.38 x 23.38 x 11.50″\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.24″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e24 sq ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe table above documents Koch's standard published sizes per PB-1202. RTF also stocks 20″x20″x12″ and 20″x25″x12″ in the same DuraKleen CPS construction; carbon load and media area scale proportionally with face dimensions.\u003c\/p\u003e\u003ch3\u003eAirborne molecular contamination (AMC) and polishing filtration\u003c\/h3\u003e\u003cp\u003eDuraKleen is engineered for environments where gas-phase contaminants need to be reduced to \u003cstrong\u003esub-ppm levels\u003c\/strong\u003e — concentrations where standard carbon filtration starts to lose effectiveness. Typical AMC applications include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCleanrooms and semiconductor manufacturing:\u003c\/strong\u003e trace amines, acids, and organics that interfere with photolithography and surface chemistry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuseum and archive preservation:\u003c\/strong\u003e trace acids and oxidants that degrade paper, photographs, textiles, and artwork over time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePharmaceutical manufacturing:\u003c\/strong\u003e trace contaminants that affect product purity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHospital sensitive areas:\u003c\/strong\u003e sub-ppm gas-phase contaminants in operating theaters, isolation rooms, and laboratory spaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolishing filtration:\u003c\/strong\u003e Used downstream of higher-capacity filters (such as DuraPure) to reduce residual contaminant concentrations to levels that primary filters can't reach efficiently\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDuraKleen is also \u003cstrong\u003eavailable in other media options for the removal of specific types of amines and acid gases\u003c\/strong\u003e — \u003ca href=\"\/pages\/quote\"\u003erequest a quote\u003c\/a\u003e with your target contaminant profile.\u003c\/p\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eDuraKleen is specified for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChemical Storage Rooms\u003c\/li\u003e\n\u003cli\u003eHospitals\u003c\/li\u003e\n\u003cli\u003eSports Arenas\u003c\/li\u003e\n\u003cli\u003eLaboratories\u003c\/li\u003e\n\u003cli\u003eAirports\u003c\/li\u003e\n\u003cli\u003eCasinos\u003c\/li\u003e\n\u003cli\u003eMuseums and Archives\u003c\/li\u003e\n\u003cli\u003eIndustrial Facilities\u003c\/li\u003e\n\u003cli\u003ePharmaceutical\u003c\/li\u003e\n\u003cli\u003eCommercial Buildings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoosing your DuraKleen configuration\u003c\/h3\u003e\u003cp\u003eDuraKleen ships in five configurations for housing compatibility and integrated particulate filtration capacity. The choice depends on your existing filter housing and what level of integrated particulate capture you need alongside the gas-phase performance:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-single-header-merv-8-cps-carbon-filter\"\u003eDuraKleen Single Header MERV 8\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-single-header-merv-15-cps-carbon-filter\"\u003eDuraKleen Single Header MERV 15\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-no-header-box-style-merv-8-cps-carbon-filter\"\u003eDuraKleen No Header Box Style MERV 8\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-no-header-box-style-merv-15-cps-carbon-filter\"\u003eDuraKleen No Header Box Style MERV 15\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you're unsure which configuration fits your existing filter housing, \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e with your housing make\/model and we'll help you specify the right header configuration. The MERV rating reflects the integrated particulate filtration capacity of the configuration; all configurations share the same Koch CPS gas-phase carbon performance.\u003c\/p\u003e\u003ch3\u003eDuraKleen vs DuraPure — choosing your gas-phase platform\u003c\/h3\u003e\u003cp\u003eKoch produces two extended-surface 12″-deep carbon filter platforms. They serve different gas-phase use cases:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuraKleen (this product family):\u003c\/strong\u003e CPS bicomponent fiber media with 500 gsm 20x50 mesh carbon. Initial resistance \u003cstrong\u003e0.24″ w.g. @ 500 FPM\u003c\/strong\u003e. Engineered for \u003cstrong\u003esub-ppm AMC removal\u003c\/strong\u003e and polishing filtration. Koch's breakthrough analysis shows DuraKleen outperforming honeycomb carbon designs at low concentration levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/koch-durapure-standard-capacity-v-cell-carbon-filter\"\u003eDuraPure Standard Capacity\u003c\/a\u003e\u003c\/strong\u003e and \u003cstrong\u003e\u003ca href=\"\/products\/koch-durapure-high-capacity-v-cell-carbon-filter\"\u003eDuraPure High Capacity\u003c\/a\u003e:\u003c\/strong\u003e Honeycomb carbon cells with premium coconut shell granular carbon. 18–26 lbs carbon load per filter, 0.34–0.74″ w.g. initial resistance. Engineered for \u003cstrong\u003ehigh-volume gas-phase capacity\u003c\/strong\u003e at moderate contaminant concentrations — specified for airports, industrial facilities, chemical plants, office buildings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor lower-depth gas-phase filtration in 1″\/2″\/4″ pleated panel form factors, see the Koch \u003ca href=\"\/products\/koch-odorkleen-es-merv-8-carbon-particulate-filter\"\u003eOdorKleen ES\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-250-carbonweb-merv-8-carbon-particulate-filter\"\u003eOdorKleen 250\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-200-m13-merv-13-carbon-particulate-filter\"\u003eOdorKleen 200\/M13\u003c\/a\u003e, and \u003ca href=\"\/products\/koch-odorkleen-600-carbonweb-merv-10-carbon-particulate-filter\"\u003eOdorKleen 600\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eSizing and ordering notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes are nominal.\u003c\/strong\u003e Per Koch PB-1202, actual dimensions are slightly less: 24x24x12 nominal = 23.38″ x 23.38″ x 11.50″ actual; same 1\/2″-1″ pattern across sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″ deep filters require deep filter racks.\u003c\/strong\u003e Verify your filter housing accommodates 12″ depth before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration is housing-specific.\u003c\/strong\u003e This product is the Double Header configuration. If your housing requires a different header type, see the \u003cstrong\u003eChoosing your DuraKleen configuration\u003c\/strong\u003e section above for cross-links to the other configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\"Call for Quote\" sizes:\u003c\/strong\u003e Some configuration\/size combinations are special-order only. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e for these or for facility-scale orders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecialty media:\u003c\/strong\u003e DuraKleen is also available with specialized media for amines and acid gases. \u003ca href=\"\/pages\/quote\"\u003eRequest a quote\u003c\/a\u003e with your target contaminant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement schedule:\u003c\/strong\u003e Drive by pressure drop curve and breakthrough monitoring. For sub-ppm AMC applications, monitor downstream concentration directly — pressure drop alone may not signal breakthrough at trace contaminant levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon disposal:\u003c\/strong\u003e Spent CPS media may have specific disposal requirements depending on captured contaminants. Follow your local hazardous waste regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch product literature\u003c\/h3\u003e\u003cp\u003eDetailed product specifications, Dynamic Breakthrough Analysis, and complete performance data for Koch DuraKleen are published in \u003cstrong\u003eKoch Bulletin PB-1202\u003c\/strong\u003e: \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/DuraKleen.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDuraKleen Product Specification PDF\u003c\/a\u003e (Koch Filter Corporation). For specialty media variants targeting amines or acid gases, consult Koch Filter Corporation (\u003ca href=\"https:\/\/www.kochfilter.com\/\" target=\"_blank\" rel=\"noopener\"\u003ekochfilter.com\u003c\/a\u003e) or \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"24\"x24\"x12\" (Case of 1)","offer_id":44119158816890,"sku":"112-686-001","price":763.74,"currency_code":"USD","in_stock":true},{"title":"20\"x25\"x12\" (Call for Quote)","offer_id":44119158849658,"sku":"112-686-202512","price":0.0,"currency_code":"USD","in_stock":false},{"title":"20\"x24\"x12\" (Call for Quote)","offer_id":44119158882426,"sku":"112-686-202412","price":0.0,"currency_code":"USD","in_stock":false},{"title":"20\"x20\"x12\" (Case of 1)","offer_id":44119158915194,"sku":"112-686-005","price":494.16,"currency_code":"USD","in_stock":true},{"title":"12\"x24\"x12\" (Case of 2)","offer_id":44119158947962,"sku":"112-686-002","price":865.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_e054920b-35a7-450b-bd11-a233f7c27518.png?v=1777864387"},{"product_id":"koch-durakleen-v8-pleated-v-cell-carbon-filter","title":"Koch DuraKleen V8 (MERV 8 Pleated V-Cell Activated Carbon Filter)","description":"\u003cp\u003ePer the Koch DuraKleen V15 \u0026amp; V8 Bulletin (Nov 2024), the Koch \u003cstrong\u003eDuraKleen V8\u003c\/strong\u003e is a \u003cstrong\u003eMERV 8 pleated V-cell activated carbon filter\u003c\/strong\u003e engineered for combined particulate and gas-phase filtration. The DuraKleen V8 uses \u003cstrong\u003epremium grade granular 60% activated coconut shell carbon\u003c\/strong\u003e, encapsulated in pleated media packs between two synthetic layers, for effective removal of \u003cstrong\u003eodors, VOCs, diesel exhaust, acid gases, ammonia, and amines\u003c\/strong\u003e. With \u003cstrong\u003e0.23″ w.g. initial resistance\u003c\/strong\u003e at 500 FPM, the V8 balances gas-phase capacity with airflow performance.\u003c\/p\u003e\u003ch3\u003eWhat you get: pleated V-cell carbon filters, sold by the case\u003c\/h3\u003e\u003cp\u003eEach variant is a complete DuraKleen V8 pleated V-cell filter with a recyclable high-impact polystyrene frame, single header configuration, premium coconut shell activated carbon encapsulated in synthetic pleated media packs. All variants are \u003cstrong\u003e12″ deep\u003c\/strong\u003e:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e — 7 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e — 5.5 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x20″x12″\u003c\/strong\u003e — \u003cem\u003eadditional size\u003c\/em\u003e — carbon load proportional to face area, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e — 3.5 lbs carbon, Case of 2\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eThe 20″x20″x12″ size is stocked by RTF beyond Koch's published table (which lists 24x24x12, 20x24x12, and 12x24x12 only). It uses the same DuraKleen V construction at proportional carbon load.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eImportant: DuraKleen V vs DuraKleen (CPS) — two distinct product lines\u003c\/h3\u003e\u003cp\u003eKoch produces two filter lines that share the \"DuraKleen\" name but use different carbon technology and serve different applications:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuraKleen V8 (this product):\u003c\/strong\u003e Pleated media packs encapsulating \u003cstrong\u003epremium coconut shell granular carbon\u003c\/strong\u003e between two synthetic layers. Plastic (high-impact polystyrene) frame. Available in MERV 8 and MERV 15. SKU prefix 111-810 (V8) or 111-811 (V15). Use for combined particulate + gas-phase filtration in airports, industrial facilities, chemical plants, and office buildings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-single-header-merv-8-cps-carbon-filter\"\u003eDuraKleen (CPS technology)\u003c\/a\u003e:\u003c\/strong\u003e Celbond Particulate Structure (CPS) media with \u003cstrong\u003e500 gsm of 20x50 mesh activated carbon\u003c\/strong\u003e suspended in a 3D bicomponent fiber network. Plastic and metal frame. Available in \u003cstrong\u003ethree header configurations\u003c\/strong\u003e (Single Header, Box Style\/No Header, Double Header) and MERV 8 or MERV 15. SKU prefix 112-685\/689\/687\/684\/686. Use for \u003cstrong\u003esub-ppm airborne molecular contamination (AMC)\u003c\/strong\u003e and polishing filtration in cleanrooms, semiconductor, museums, and pharmaceutical.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you're unsure which DuraKleen line fits your application, \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e — the product name is shared, but the construction and ideal use cases differ.\u003c\/p\u003e\u003ch3\u003eDuraKleen V8 construction and specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e Extended-surface pleated V-cell carbon filter, 12″ deep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e Premium grade granular 60% activated \u003cstrong\u003ecoconut shell\u003c\/strong\u003e carbon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia architecture:\u003c\/strong\u003e Pleated media packs \u003cem\u003eencapsulating the carbon between two synthetic layers\u003c\/em\u003e, with the highly active small carbon granules positioned for higher adsorption rates\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia composition:\u003c\/strong\u003e 100% synthetic mechanical media impregnated with activated carbon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e \u003cstrong\u003ePlastic (high-impact polystyrene)\u003c\/strong\u003e — rugged, rigid, easy to install. \u003cstrong\u003eFrame is recyclable.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single header only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealant:\u003c\/strong\u003e Thermoplastic hot-melt adhesive secures the individual carbon cells within the frame and eliminates air bypass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV rating:\u003c\/strong\u003e MERV 8 per ASHRAE Test Standard 52.2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial resistance:\u003c\/strong\u003e \u003cstrong\u003e0.23″ w.g.\u003c\/strong\u003e @ 500 FPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended final resistance:\u003c\/strong\u003e 1.5″ w.g.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum continuous operating temperature:\u003c\/strong\u003e 130°F (54°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e Manufactured by an ISO 9001 registered company\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisposability:\u003c\/strong\u003e Single-use disposable; not washable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePerformance data (Koch DuraKleen V series)\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eEfficiency Tier\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eInitial Resistance @ 500 FPM\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eFinal Resistance\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eMERV Rating\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003eDuraKleen V8\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.23″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e1.5″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eMERV 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003eDuraKleen V15\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.40″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e1.5″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eMERV 15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe V8 variant (this product) is highlighted above. The MERV 15 layer is denser than the MERV 8 layer, which is why the V15 has higher initial resistance (0.40″ vs 0.23″). Verify your HVAC system can handle the resistance before specifying.\u003c\/p\u003e\u003ch3\u003eTargeted contaminants and gases (per Koch)\u003c\/h3\u003e\u003cp\u003ePer Koch's features list, DuraKleen V is designed for effective removal of:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOdors and volatile organic compounds (VOCs)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDiesel exhaust\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAcid gases\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAmmonia\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAmines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe combination of premium coconut shell carbon and pleated media architecture targets these specific gas-phase contaminants alongside MERV 8 particulate capture.\u003c\/p\u003e\u003ch3\u003eContaminants effectively controlled by activated carbon\u003c\/h3\u003e\u003cp\u003ePremium 60% activated coconut shell carbon effectively adsorbs a broad spectrum of gas-phase contaminants. Categories well-controlled include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolatile organic compounds (VOCs) and solvents:\u003c\/strong\u003e acetone, toluene, xylene, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), ethyl acetate, butyl acetate, mineral spirits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChlorinated compounds:\u003c\/strong\u003e carbon tetrachloride, chloroform, trichloroethylene, tetrachloroethylene, ethylene dichloride, chlorobenzene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAromatic hydrocarbons:\u003c\/strong\u003e benzene, ethylbenzene, styrene, toluene, xylene, naphtha\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAliphatic hydrocarbons:\u003c\/strong\u003e hexane, heptane, octane, decane, undecane, dodecane, cyclohexane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlcohols and ketones:\u003c\/strong\u003e butyl alcohol, ethanol, isopropyl alcohol, isoamyl alcohol, cyclohexanone, diethyl ketone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSulfur compounds:\u003c\/strong\u003e carbon disulfide, dimethyl disulfide, ethyl sulfide, butyl mercaptan, thiophenol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrogen-containing:\u003c\/strong\u003e pyridine, dibutylamine, pentylamine, nitrogen dioxide (\u0026lt;100 ppb), nitroethane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhenols and acids:\u003c\/strong\u003e phenol, cresol, acetic acid, butyric acid, formic acid, propionic acid, valeric acid\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eKoch publishes a comprehensive list of approximately 100+ specific compounds in the DuraKleen V15 \u0026amp; V8 bulletin linked at the bottom of this page.\u003c\/p\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eDuraKleen V is specified for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAirports\u003c\/li\u003e\n\u003cli\u003eIndustrial facilities\u003c\/li\u003e\n\u003cli\u003eChemical plants\u003c\/li\u003e\n\u003cli\u003eOffice buildings\u003c\/li\u003e\n\u003cli\u003eAnd other commercial air filtration systems where combined particulate and gas-phase adsorption is required at MERV 8 efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDuraKleen V8 vs V15 — choosing your tier\u003c\/h3\u003e\u003cp\u003eKoch produces DuraKleen V in two efficiency tiers. The choice comes down to particulate efficiency vs pressure drop:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuraKleen V8 (this product):\u003c\/strong\u003e \u003cstrong\u003eMERV 8\u003c\/strong\u003e particulate efficiency, 0.23″ w.g. initial resistance. \u003cstrong\u003eUse when pressure-drop budget is tight\u003c\/strong\u003e or when standard MERV 8 particulate capture is sufficient. The lower pressure drop is the efficiency-tier advantage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-v15-pleated-v-cell-carbon-filter\"\u003eDuraKleen V15\u003c\/a\u003e:\u003c\/strong\u003e MERV 15 particulate efficiency, 0.40″ w.g. initial resistance. Captures fine particles including wildfire smoke and virus-laden aerosols alongside the gas-phase carbon performance. Use when fine particulate filtration matters alongside gas removal.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOther Koch carbon filtration options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFor \u003cstrong\u003emaximum gas-phase capacity\u003c\/strong\u003e (18–26 lbs carbon per filter) without MERV 13+ requirements, see \u003ca href=\"\/products\/koch-durapure-standard-capacity-v-cell-carbon-filter\"\u003eKoch DuraPure Standard Capacity\u003c\/a\u003e or \u003ca href=\"\/products\/koch-durapure-high-capacity-v-cell-carbon-filter\"\u003eDuraPure High Capacity\u003c\/a\u003e — honeycomb carbon cell construction.\u003c\/li\u003e\n\u003cli\u003eFor \u003cstrong\u003esub-ppm AMC removal\u003c\/strong\u003e (cleanrooms, museums, semiconductor), see the \u003ca href=\"\/products\/koch-durakleen-single-header-merv-8-cps-carbon-filter\"\u003eKoch DuraKleen (CPS technology) family\u003c\/a\u003e — bicomponent fiber media with 500 gsm 20x50 mesh carbon.\u003c\/li\u003e\n\u003cli\u003eFor \u003cstrong\u003e1″\/2″\/4″ pleated panel\u003c\/strong\u003e form factors, see the OdorKleen family: \u003ca href=\"\/products\/koch-odorkleen-es-merv-8-carbon-particulate-filter\"\u003eOdorKleen ES (MERV 8)\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-250-carbonweb-merv-8-carbon-particulate-filter\"\u003eOdorKleen 250 (CarbonWeb MERV 8)\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-200-m13-merv-13-carbon-particulate-filter\"\u003eOdorKleen 200\/M13 (MERV 13)\u003c\/a\u003e, and \u003ca href=\"\/products\/koch-odorkleen-600-carbonweb-merv-10-carbon-particulate-filter\"\u003eOdorKleen 600 (MERV 10)\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSizing and ordering notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes are nominal.\u003c\/strong\u003e Per Koch, actual dimensions follow the standard \"1\/2″ less than nominal\" pattern in width and height (e.g., 24″x24″ nominal = approximately 23-3\/8″x23-3\/8″ actual). Confirm your filter housing accommodates the nominal size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″ deep filters require deep filter racks.\u003c\/strong\u003e These are commercial\/industrial-scale filters — verify your filter housing accommodates 12″ depth before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle header configuration only\u003c\/strong\u003e — if your housing requires no-header (box style) or double-header configuration, see the \u003ca href=\"\/products\/koch-durakleen-no-header-box-style-merv-8-cps-carbon-filter\"\u003eDuraKleen CPS line\u003c\/a\u003e which offers all three header configurations (physically different product, different carbon technology).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEach variant ships in the case quantity shown.\u003c\/strong\u003e 24x24x12 and 20x24x12 ship as individual filters; 12x24x12 ships 2 per case; 20x20x12 ships individually.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement schedule:\u003c\/strong\u003e Drive by pressure drop curve and odor breakthrough. With Koch's recommended 1.5″ w.g. final resistance, estimate service life from your typical airflow. The V8 starts at 0.23″ w.g. clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature limit:\u003c\/strong\u003e 130°F continuous max. Lower than DuraPure or OdorKleen 600 (180°F), so not suitable for elevated-temperature applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon disposal:\u003c\/strong\u003e Spent carbon may have specific disposal requirements depending on captured contaminants and quantities. Follow your local hazardous waste regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch product literature\u003c\/h3\u003e\u003cp\u003eDetailed product specifications, the complete contaminant list, capacity tables, and full performance data for Koch DuraKleen V8 and V15 are published in the \u003cstrong\u003eKoch DuraKleen V15 \u0026amp; V8 Bulletin (Nov 2024)\u003c\/strong\u003e: \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/Koch_DuraKleen_V15_V8_Nov_24.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDuraKleen V15 \u0026amp; V8 Product Specification PDF\u003c\/a\u003e (Koch Filter Corporation). Available through Koch Filter Corporation (\u003ca href=\"https:\/\/www.kochfilter.com\/\" target=\"_blank\" rel=\"noopener\"\u003ekochfilter.com\u003c\/a\u003e) or \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"24\"x24\"x12\" (Case of 1)","offer_id":44119159013498,"sku":"111-810-101","price":914.64,"currency_code":"USD","in_stock":true},{"title":"20\"x24\"x12\" (Case of 1)","offer_id":44119159046266,"sku":"111-810-103","price":877.32,"currency_code":"USD","in_stock":true},{"title":"20\"x20\"x12\" (Case of 1)","offer_id":44119159079034,"sku":"111-810-301","price":687.04,"currency_code":"USD","in_stock":true},{"title":"12\"x24\"x12\" (Case of 2)","offer_id":44119159111802,"sku":"111-810-102","price":1694.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_ccdf2e36-eccf-40b3-9dcf-3c81178f09b4.jpg?v=1777865307"},{"product_id":"koch-durakleen-v15-pleated-v-cell-carbon-filter","title":"Koch DuraKleen V15 (MERV 15 Pleated V-Cell Activated Carbon Filter)","description":"\u003cp\u003ePer the Koch DuraKleen V15 \u0026amp; V8 Bulletin (Nov 2024), the Koch \u003cstrong\u003eDuraKleen V15\u003c\/strong\u003e is a \u003cstrong\u003eMERV 15 pleated V-cell activated carbon filter\u003c\/strong\u003e engineered for combined particulate and gas-phase filtration. The DuraKleen V15 uses \u003cstrong\u003epremium grade granular 60% activated coconut shell carbon\u003c\/strong\u003e, encapsulated in pleated media packs between two synthetic layers, for effective removal of \u003cstrong\u003eodors, VOCs, diesel exhaust, acid gases, ammonia, and amines\u003c\/strong\u003e. With \u003cstrong\u003e0.40″ w.g. initial resistance\u003c\/strong\u003e at 500 FPM, the V15 balances gas-phase capacity with airflow performance.\u003c\/p\u003e\u003ch3\u003eWhat you get: pleated V-cell carbon filters, sold by the case\u003c\/h3\u003e\u003cp\u003eEach variant is a complete DuraKleen V15 pleated V-cell filter with a recyclable high-impact polystyrene frame, single header configuration, premium coconut shell activated carbon encapsulated in synthetic pleated media packs. All variants are \u003cstrong\u003e12″ deep\u003c\/strong\u003e:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24″x24″x12″\u003c\/strong\u003e — 7 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x24″x12″\u003c\/strong\u003e — 5.5 lbs carbon, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20″x20″x12″\u003c\/strong\u003e — \u003cem\u003eadditional size\u003c\/em\u003e — carbon load proportional to face area, Single filter per case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″x24″x12″\u003c\/strong\u003e — 3.6 lbs carbon, Case of 2\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eThe 20″x20″x12″ size is stocked by RTF beyond Koch's published table (which lists 24x24x12, 20x24x12, and 12x24x12 only). It uses the same DuraKleen V construction at proportional carbon load.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eImportant: DuraKleen V vs DuraKleen (CPS) — two distinct product lines\u003c\/h3\u003e\u003cp\u003eKoch produces two filter lines that share the \"DuraKleen\" name but use different carbon technology and serve different applications:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuraKleen V15 (this product):\u003c\/strong\u003e Pleated media packs encapsulating \u003cstrong\u003epremium coconut shell granular carbon\u003c\/strong\u003e between two synthetic layers. Plastic (high-impact polystyrene) frame. Available in MERV 8 and MERV 15. SKU prefix 111-810 (V8) or 111-811 (V15). Use for combined particulate + gas-phase filtration in airports, industrial facilities, chemical plants, and office buildings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-single-header-merv-8-cps-carbon-filter\"\u003eDuraKleen (CPS technology)\u003c\/a\u003e:\u003c\/strong\u003e Celbond Particulate Structure (CPS) media with \u003cstrong\u003e500 gsm of 20x50 mesh activated carbon\u003c\/strong\u003e suspended in a 3D bicomponent fiber network. Plastic and metal frame. Available in \u003cstrong\u003ethree header configurations\u003c\/strong\u003e (Single Header, Box Style\/No Header, Double Header) and MERV 8 or MERV 15. SKU prefix 112-685\/689\/687\/684\/686. Use for \u003cstrong\u003esub-ppm airborne molecular contamination (AMC)\u003c\/strong\u003e and polishing filtration in cleanrooms, semiconductor, museums, and pharmaceutical.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you're unsure which DuraKleen line fits your application, \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e — the product name is shared, but the construction and ideal use cases differ.\u003c\/p\u003e\u003ch3\u003eDuraKleen V15 construction and specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm factor:\u003c\/strong\u003e Extended-surface pleated V-cell carbon filter, 12″ deep\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon:\u003c\/strong\u003e Premium grade granular 60% activated \u003cstrong\u003ecoconut shell\u003c\/strong\u003e carbon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia architecture:\u003c\/strong\u003e Pleated media packs \u003cem\u003eencapsulating the carbon between two synthetic layers\u003c\/em\u003e, with the highly active small carbon granules positioned for higher adsorption rates\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia composition:\u003c\/strong\u003e 100% synthetic mechanical media impregnated with activated carbon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e \u003cstrong\u003ePlastic (high-impact polystyrene)\u003c\/strong\u003e — rugged, rigid, easy to install. \u003cstrong\u003eFrame is recyclable.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader configuration:\u003c\/strong\u003e Single header only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealant:\u003c\/strong\u003e Thermoplastic hot-melt adhesive secures the individual carbon cells within the frame and eliminates air bypass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV rating:\u003c\/strong\u003e MERV 15 per ASHRAE Test Standard 52.2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInitial resistance:\u003c\/strong\u003e \u003cstrong\u003e0.40″ w.g.\u003c\/strong\u003e @ 500 FPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended final resistance:\u003c\/strong\u003e 1.5″ w.g.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum continuous operating temperature:\u003c\/strong\u003e 130°F (54°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing:\u003c\/strong\u003e Manufactured by an ISO 9001 registered company\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisposability:\u003c\/strong\u003e Single-use disposable; not washable\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePerformance data (Koch DuraKleen V series)\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eEfficiency Tier\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eInitial Resistance @ 500 FPM\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eFinal Resistance\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ccc;padding:8px;text-align:left;\"\u003eMERV Rating\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003eDuraKleen V8\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.23″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e1.5″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eMERV 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e\u003cstrong\u003eDuraKleen V15\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e0.40″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003e1.5″ w.g.\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccc;padding:8px;\"\u003eMERV 15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe V15 variant (this product) is highlighted above. The MERV 15 layer is denser than the MERV 8 layer, which is why the V15 has higher initial resistance (0.40″ vs 0.23″). Verify your HVAC system can handle the resistance before specifying.\u003c\/p\u003e\u003ch3\u003eTargeted contaminants and gases (per Koch)\u003c\/h3\u003e\u003cp\u003ePer Koch's features list, DuraKleen V is designed for effective removal of:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eOdors and volatile organic compounds (VOCs)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDiesel exhaust\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAcid gases\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAmmonia\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAmines\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe combination of premium coconut shell carbon and pleated media architecture targets these specific gas-phase contaminants alongside MERV 15 particulate capture.\u003c\/p\u003e\u003ch3\u003eContaminants effectively controlled by activated carbon\u003c\/h3\u003e\u003cp\u003ePremium 60% activated coconut shell carbon effectively adsorbs a broad spectrum of gas-phase contaminants. Categories well-controlled include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolatile organic compounds (VOCs) and solvents:\u003c\/strong\u003e acetone, toluene, xylene, methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), ethyl acetate, butyl acetate, mineral spirits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChlorinated compounds:\u003c\/strong\u003e carbon tetrachloride, chloroform, trichloroethylene, tetrachloroethylene, ethylene dichloride, chlorobenzene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAromatic hydrocarbons:\u003c\/strong\u003e benzene, ethylbenzene, styrene, toluene, xylene, naphtha\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAliphatic hydrocarbons:\u003c\/strong\u003e hexane, heptane, octane, decane, undecane, dodecane, cyclohexane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlcohols and ketones:\u003c\/strong\u003e butyl alcohol, ethanol, isopropyl alcohol, isoamyl alcohol, cyclohexanone, diethyl ketone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSulfur compounds:\u003c\/strong\u003e carbon disulfide, dimethyl disulfide, ethyl sulfide, butyl mercaptan, thiophenol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrogen-containing:\u003c\/strong\u003e pyridine, dibutylamine, pentylamine, nitrogen dioxide (\u0026lt;100 ppb), nitroethane\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhenols and acids:\u003c\/strong\u003e phenol, cresol, acetic acid, butyric acid, formic acid, propionic acid, valeric acid\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eKoch publishes a comprehensive list of approximately 100+ specific compounds in the DuraKleen V15 \u0026amp; V8 bulletin linked at the bottom of this page.\u003c\/p\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eDuraKleen V is specified for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAirports\u003c\/li\u003e\n\u003cli\u003eIndustrial facilities\u003c\/li\u003e\n\u003cli\u003eChemical plants\u003c\/li\u003e\n\u003cli\u003eOffice buildings\u003c\/li\u003e\n\u003cli\u003eAnd other commercial air filtration systems where combined particulate and gas-phase adsorption is required at MERV 15 efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDuraKleen V8 vs V15 — choosing your tier\u003c\/h3\u003e\u003cp\u003eKoch produces DuraKleen V in two efficiency tiers. The choice comes down to particulate efficiency vs pressure drop:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuraKleen V15 (this product):\u003c\/strong\u003e \u003cstrong\u003eMERV 15\u003c\/strong\u003e particulate efficiency, 0.40″ w.g. initial resistance. Captures fine particles down to sub-micron sizes including wildfire smoke and virus-laden aerosols, alongside the gas-phase carbon performance. \u003cstrong\u003eUse when fine particulate filtration matters\u003c\/strong\u003e alongside gas removal — healthcare, pharmaceutical, lab, and high-IAQ commercial applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/koch-durakleen-v8-pleated-v-cell-carbon-filter\"\u003eDuraKleen V8\u003c\/a\u003e:\u003c\/strong\u003e MERV 8 particulate efficiency, 0.23″ w.g. initial resistance. Lower pressure drop saves fan energy. Use when standard MERV 8 particulate capture is sufficient and gas-phase removal is the priority.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOther Koch carbon filtration options\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFor \u003cstrong\u003emaximum gas-phase capacity\u003c\/strong\u003e (18–26 lbs carbon per filter) without MERV 13+ requirements, see \u003ca href=\"\/products\/koch-durapure-standard-capacity-v-cell-carbon-filter\"\u003eKoch DuraPure Standard Capacity\u003c\/a\u003e or \u003ca href=\"\/products\/koch-durapure-high-capacity-v-cell-carbon-filter\"\u003eDuraPure High Capacity\u003c\/a\u003e — honeycomb carbon cell construction.\u003c\/li\u003e\n\u003cli\u003eFor \u003cstrong\u003esub-ppm AMC removal\u003c\/strong\u003e (cleanrooms, museums, semiconductor), see the \u003ca href=\"\/products\/koch-durakleen-single-header-merv-8-cps-carbon-filter\"\u003eKoch DuraKleen (CPS technology) family\u003c\/a\u003e — bicomponent fiber media with 500 gsm 20x50 mesh carbon.\u003c\/li\u003e\n\u003cli\u003eFor \u003cstrong\u003e1″\/2″\/4″ pleated panel\u003c\/strong\u003e form factors, see the OdorKleen family: \u003ca href=\"\/products\/koch-odorkleen-es-merv-8-carbon-particulate-filter\"\u003eOdorKleen ES (MERV 8)\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-250-carbonweb-merv-8-carbon-particulate-filter\"\u003eOdorKleen 250 (CarbonWeb MERV 8)\u003c\/a\u003e, \u003ca href=\"\/products\/koch-odorkleen-200-m13-merv-13-carbon-particulate-filter\"\u003eOdorKleen 200\/M13 (MERV 13)\u003c\/a\u003e, and \u003ca href=\"\/products\/koch-odorkleen-600-carbonweb-merv-10-carbon-particulate-filter\"\u003eOdorKleen 600 (MERV 10)\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSizing and ordering notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes are nominal.\u003c\/strong\u003e Per Koch, actual dimensions follow the standard \"1\/2″ less than nominal\" pattern in width and height (e.g., 24″x24″ nominal = approximately 23-3\/8″x23-3\/8″ actual). Confirm your filter housing accommodates the nominal size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12″ deep filters require deep filter racks.\u003c\/strong\u003e These are commercial\/industrial-scale filters — verify your filter housing accommodates 12″ depth before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle header configuration only\u003c\/strong\u003e — if your housing requires no-header (box style) or double-header configuration, see the \u003ca href=\"\/products\/koch-durakleen-no-header-box-style-merv-8-cps-carbon-filter\"\u003eDuraKleen CPS line\u003c\/a\u003e which offers all three header configurations (physically different product, different carbon technology).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEach variant ships in the case quantity shown.\u003c\/strong\u003e 24x24x12 and 20x24x12 ship as individual filters; 12x24x12 ships 2 per case; 20x20x12 ships individually.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement schedule:\u003c\/strong\u003e Drive by pressure drop curve and odor breakthrough. With Koch's recommended 1.5″ w.g. final resistance, estimate service life from your typical airflow. The V15 starts at 0.40″ w.g. clean.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature limit:\u003c\/strong\u003e 130°F continuous max. Lower than DuraPure or OdorKleen 600 (180°F), so not suitable for elevated-temperature applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon disposal:\u003c\/strong\u003e Spent carbon may have specific disposal requirements depending on captured contaminants and quantities. Follow your local hazardous waste regulations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKoch product literature\u003c\/h3\u003e\u003cp\u003eDetailed product specifications, the complete contaminant list, capacity tables, and full performance data for Koch DuraKleen V8 and V15 are published in the \u003cstrong\u003eKoch DuraKleen V15 \u0026amp; V8 Bulletin (Nov 2024)\u003c\/strong\u003e: \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/Koch_DuraKleen_V15_V8_Nov_24.pdf\" target=\"_blank\" rel=\"noopener\"\u003eDuraKleen V15 \u0026amp; V8 Product Specification PDF\u003c\/a\u003e (Koch Filter Corporation). Available through Koch Filter Corporation (\u003ca href=\"https:\/\/www.kochfilter.com\/\" target=\"_blank\" rel=\"noopener\"\u003ekochfilter.com\u003c\/a\u003e) or \u003ca href=\"\/pages\/contact-us\"\u003econtact RTF support\u003c\/a\u003e.\u003c\/p\u003e","brand":"Koch","offers":[{"title":"24\"x24\"x12\" (Case of 1)","offer_id":44119159144570,"sku":"111-811-101","price":1401.12,"currency_code":"USD","in_stock":true},{"title":"20\"x24\"x12\" (Case of 1)","offer_id":44119159177338,"sku":"111-811-103","price":1343.94,"currency_code":"USD","in_stock":true},{"title":"20\"x20\"x12\" (Case of 1)","offer_id":44119159210106,"sku":"111-811-301","price":929.55,"currency_code":"USD","in_stock":true},{"title":"12\"x24\"x12\" (Case of 2)","offer_id":44119159242874,"sku":"111-811-102","price":2562.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1130\/9462\/files\/getimage2_1fe30ecd-c151-4a58-a7ae-edd8ad793b4a.jpg?v=1777865313"}],"url":"https:\/\/www.rememberthefilter.com\/collections\/v-cell-carbon-filters.oembed","provider":"RememberTheFilter.com","version":"1.0","type":"link"}