{"title":"Koch DuraPure Carbon Filters | V-Cell Honeycomb, Std \u0026 High Capacity","description":"\u003cp\u003eKoch \u003cstrong\u003eDuraPure\u003c\/strong\u003e extended-surface V-cell carbon filters — premium 60% activated coconut shell carbon in honeycomb cell construction, 12″ deep. \u003cstrong\u003eStandard Capacity\u003c\/strong\u003e (5 lbs solvent capacity, 0.34″ w.g. initial pressure drop, 18 lbs carbon at 24x24x12) and \u003cstrong\u003eHigh Capacity\u003c\/strong\u003e (8 lbs solvent capacity, 0.74″ w.g. initial pressure drop, 26 lbs carbon at 24x24x12). For airports, chemical plants, industrial facilities, and high-capacity gas-phase HVAC.\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"}],"url":"https:\/\/www.rememberthefilter.com\/collections\/durapure-carbon-filters.oembed","provider":"RememberTheFilter.com","version":"1.0","type":"link"}