Koch DuraKleen Single Header MERV 8 (CPS Carbon V-Cell Gas-Phase Filter)

Per Koch Bulletin PB-1202, the Koch DuraKleen Single Header MERV 8 is a high-efficiency gas-phase V-cell carbon filter engineered for environments with airborne molecular contamination (AMC) at sub-ppm levels. The DuraKleen uses Koch's patented Celbond Particulate Structure (CPS) technology, suspending 500 gsm of 20x50 mesh activated carbon in a tightly bonded three-dimensional network of bicomponent fibers. This Single Header configuration is rated MERV 8 and is sized to fit single header housing configurations.

What you get: V-cell gas-phase carbon filters, sold by the case

Each variant is a complete DuraKleen Single Header MERV 8 V-cell filter with the CPS-technology carbon media. All variants are 12″ deep; pricing varies by face dimensions:

• 24″x24″x12″ — 6 lbs carbon, Single filter per case
• 20″x25″x12″ — additional size — 5 lbs carbon, Single filter per case
• 20″x24″x12″ — 6 lbs carbon, Single filter per case
• 20″x20″x12″ — additional size — 3.7 lbs carbon, Single filter per case
• 12″x24″x12″ — 3 lbs carbon, Case of 2

Sizes 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.

Celbond Particulate Structure (CPS) technology

CPS technology is the key differentiator that distinguishes DuraKleen from standard honeycomb carbon filters:

• Carbon distribution: Activated carbon is suspended in uniform distribution throughout a tightly bonded three-dimensional network of bicomponent fibers — no honeycomb cells or loose granular carbon.
• Carbon mesh size: 20x50 mesh — small mesh = high efficiency. Smaller carbon particles expose more surface area to the airstream per unit volume.
• Carbon load: 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.
• Bonding efficiency: The fiber-to-carbon bond obstructs only approximately 1% of the carbon's surface area, leaving roughly 99% available for gas adsorption.
• Tortuous airflow path: Gas contaminants pass through tortuous pathways inside the CPS media, ensuring intimate contact between contaminant molecules and the carbon adsorption surface.
• Eliminates post-filtration: 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.

DuraKleen Single Header MERV 8 construction

• Form factor: Extended-surface V-cell carbon filter, 12″ deep
• Media technology: Celbond Particulate Structure (CPS) — activated carbon suspended in 3D bicomponent fiber network
• Carbon: 500 gsm of 20x50 mesh activated carbon
• Initial resistance: 0.24″ w.g. @ 500 FPM — substantially lower than DuraPure honeycomb-cell filters at the same face velocity
• Header configuration: Single Header — mounting flange configuration: single header
• MERV rating: MERV 8
• Available depths: 12″ only (deep V-cell architecture)
• Polishing filter: Koch positions DuraKleen as an "excellent polishing filter for high contaminant concentrations."
• Disposability: Single-use disposable; not washable

Koch published dimensions and media area (PB-1202)

The 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.

Airborne molecular contamination (AMC) and polishing filtration

DuraKleen is engineered for environments where gas-phase contaminants need to be reduced to sub-ppm levels — concentrations where standard carbon filtration starts to lose effectiveness. Typical AMC applications include:

• Cleanrooms and semiconductor manufacturing: trace amines, acids, and organics that interfere with photolithography and surface chemistry
• Museum and archive preservation: trace acids and oxidants that degrade paper, photographs, textiles, and artwork over time
• Pharmaceutical manufacturing: trace contaminants that affect product purity
• Hospital sensitive areas: sub-ppm gas-phase contaminants in operating theaters, isolation rooms, and laboratory spaces
• Polishing filtration: Used downstream of higher-capacity filters (such as DuraPure) to reduce residual contaminant concentrations to levels that primary filters can't reach efficiently

DuraKleen is also available in other media options for the removal of specific types of amines and acid gases — request a quote with your target contaminant profile.

Applications

DuraKleen is specified for:

• Chemical Storage Rooms
• Hospitals
• Sports Arenas
• Laboratories
• Airports
• Casinos
• Museums and Archives
• Industrial Facilities
• Pharmaceutical
• Commercial Buildings

Choosing your DuraKleen configuration

DuraKleen 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:

• DuraKleen Single Header MERV 15
• DuraKleen No Header Box Style MERV 8
• DuraKleen No Header Box Style MERV 15
• DuraKleen Double Header MERV 8

If you're unsure which configuration fits your existing filter housing, contact RTF support 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.

DuraKleen vs DuraPure — choosing your gas-phase platform

Koch produces two extended-surface 12″-deep carbon filter platforms. They serve different gas-phase use cases:

• DuraKleen (this product family): CPS bicomponent fiber media with 500 gsm 20x50 mesh carbon. Initial resistance 0.24″ w.g. @ 500 FPM. Engineered for sub-ppm AMC removal and polishing filtration. Koch's breakthrough analysis shows DuraKleen outperforming honeycomb carbon designs at low concentration levels.
• DuraPure Standard Capacity and DuraPure High Capacity: 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 high-volume gas-phase capacity at moderate contaminant concentrations — specified for airports, industrial facilities, chemical plants, office buildings.

For lower-depth gas-phase filtration in 1″/2″/4″ pleated panel form factors, see the Koch OdorKleen ES, OdorKleen 250, OdorKleen 200/M13, and OdorKleen 600.

Sizing and ordering notes

• Sizes are nominal. 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.
• 12″ deep filters require deep filter racks. Verify your filter housing accommodates 12″ depth before ordering.
• Header configuration is housing-specific. This product is the Single Header configuration. If your housing requires a different header type, see the Choosing your DuraKleen configuration section above for cross-links to the other configurations.
• "Call for Quote" sizes: Some configuration/size combinations are special-order only. Request a quote for these or for facility-scale orders.
• Specialty media: DuraKleen is also available with specialized media for amines and acid gases. Request a quote with your target contaminant.
• Replacement schedule: 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.
• Carbon disposal: Spent CPS media may have specific disposal requirements depending on captured contaminants. Follow your local hazardous waste regulations.

Koch product literature

Detailed product specifications, Dynamic Breakthrough Analysis, and complete performance data for Koch DuraKleen are published in Koch Bulletin PB-1202: DuraKleen Product Specification PDF (Koch Filter Corporation). For specialty media variants targeting amines or acid gases, consult Koch Filter Corporation (kochfilter.com) or contact RTF support.