Rigid Filters Box
A Rigid Filter Box is an air filtration device that uses a rigid frame to hold a filter element in place and is commonly used in HVAC systems and industrial processes to remove contaminants from the air. Sales & Customer Service Inquiries (302) 455-0551
OdorKleen™ 200/M13
High Efficiency MERV 13 Carbon/Alumina Pleated Filter
OdorKleen 200/M13 offers superior performance in gaseous and odor adsorption and excellent particulate filtration. This “combination” product contains 200 gsm of granular activated carbon and a MERV 13 filtration layer.
- Superior odor removal
- Low-pressure drop
- Virtually no dusting
- Great particulate efficiency
- MERV 13 efficiency
- Designed to remove ammonia, formaldehyde, sulfur dioxide and hydrogen sulfide

OdorKleen™ 600
High Efficiency MERV 10 Carbon/Alumina Pleated Filter
OdorKleen 600 offers superior performance in gaseous and odor adsorption and excellent particulate filtration. This “combination” product contains 592 gsm of granular activated carbon and activated alumina impregnated with potassium permanganate carbon attached to a high-efficiency polyester media.
- Superior odor removal
- Low-pressure drop
- Virtually no dusting
- Great particulate efficiency
- MERV 10 efficiency
- Contains a 50/50 blend of CTC 60 carbon and activated alumina with 5% potassium permanganate
- Designed to remove ammonia, formaldehyde, sulfur dioxide and hydrogen sulfide

DuraPURE™
Extended Surface Activated Carbon Filter
Kotch DuraPURE is an extended surface carbon filter which utilizes premium grade granular 60% activated carbon. It has a unique V-shaped frame that holds up to 26 pounds of activated carbon in a single 24x24x12 filter, which ensures maximum VOC and odor removal in any commercial or industrial application.
- Effective removal of odors and volatile organic compounds VOC’s
- Constructed with premium-grade coconut shell carbon
- Available with specially impregnated adsorption media

DuraKleen™
High Efficiency Gas Phase Filter
Kotch DuraKleen is a high-efficiency gas phase filter that removes VOC’s (volatile organic compounds), chemicals, and contaminants. It has small mesh size carbon for high efficiency and uses Celbond Particulate Structure (CPS) Technology. It has more odor-catching surface area with less weight and low-pressure drop.
- Removes VOC’s (volatile organic compounds), chemicals and contaminants
- Small mesh size carbon for high efficiency
- Uses Celbond Particulate Structure (CPS) Technology
- More odor-catching surface area with less weight
- Low-pressure drop
- Virtually no dusting
- Excellent polishing filter for high contaminant concentrations

MicroMAX™ PL2S
High Efficiency Synthetic Minipleat Filter
The Kotch MicroMAX PL2S is an extended surface, mini-pleat air filter engineered to provide maximum performance and prolonged filter lifecycles in all types of commercial and industrial HVAC applications. The MicroMAX PL2S is available in MERV 14, MERV 13 and MERV 11 efficiency when tested in accordance to ASHRAE Test Standard 52.2-2017. The new media design allows for compact pleat spacing that produces a low initial pressure drop while maximizing the media area in the filter.
- Minipleat Design
- 100% Synthetic Media
- Plastic Frame
- Low Resistance To Airflow
- Available in MERV 14, MERV 13, and MERV 11

Multi-Cell™
Medium and High Efficiency Extended Surface Air Filters
Koch Filter’s Multi-Cell is a high efficiency, extended surface air filter designed for use in HVAC applications of all types. Its rigid construction makes it a superior filter in variable air volume (VAV) systems or in any application where extreme conditions require additional filter strength and reliability.
- Three efficiency ranges
- Multiple frame and header options
- Designed for variable air volume (VAV) systems

Multi-Flo Series G™
Microfiberglass, Extended Surface Rigid Air Filter
Koch Filter’s Multi-Flo is a rigid, extended surface air filter that is engineered to provide medium and high-efficiency air filtration with long filter lifecycles.
Because of its rugged metal and plastic frame construction, the Multi-Flo is capable of operating in a wide variety of air handling systems and is an excellent product for variable air volume (VAV) applications where changes in airflow might render a non-rigid filter ineffective.
These filters are available in a single-header or non-header configuration, making them easy to install in any side access or front access housing. Each filter is completely disposable and is furnished and ready for installation.
- Low-pressure drop
- Reduces energy cost
- UL rated
- Durable plastic internal supports
- MERV 10 – 15 performance rating
- High-efficiency synthetic or microfiberglass media
- Rigid construction for variable-air-volume systems

DuraMAX 2v™
High Efficiency Minipleat Filter
Koch Filter’s DuraMAX 2v is an extended surface air filter engineered to provide maximum performance with prolonged filter lifecycles. These filters are commonly used in office buildings, hospitals, paint booths, gas turbine/power generation, and various other commercial and industrial HVAC applications. Designed to replace almost any competitive high-efficiency air filter on today’s market, the DuraMAX 2v’s lightweight all-plastic frame installs easily into side-access housings or front-load holding frames, and is an ideal choice to replace bag filters and other box-style rigid filters.
- MERV 11-15 performance rating
- High efficiency mini pleat (65%, 75%, 85%, 55% and 98%)
- High efficiency microfiberglass or synthetic media
- Low pressure drop
- Reduces energy cost
- Light weight plastic, extremely rigid frame
- Superior dust holding and prolonged filter life
- UL rated
- Incinerable

DuraMAX 4v™
High Capacity Extended Surface Minipleat Filter
The DuraMAX 4v is a rigid, extended surface air filter that is engineered to provide maximum performance and prolonged filter lifecycles, even in the most difficult environments. Its durable, rugged construction makes it a great choice for filtration systems with high velocities or variable air volume (VAV). Constructed with an all-plastic frame, it is easily incinerated after use.
The DuraMAX 4v provides an unequaled combination of low-pressure drop and high efficiency through our unique minipleat design, ensuring a low pressure drop, which can aid in lowering energy costs to the building owner. Another benefit of the increased media area is extremely high dust-holding capacity, which significantly prolongs the service life of the filter. Fewer filter changes translate into substantially reduced maintenance and disposal costs.
- MERV 11-15 performance rating
- High efficiency microfiberglass or synthetic media
- Low pressure drop
- Reduced energy cost
- 194 square feet of media (24x24x12)
- Incinerable
- Light-weight plastic, extremely rigid frame
- Superior dust holding and prolonged filter life

LoadTECH® Filters MERV 14™
High-Efficiency 4-Inch Extended Rigid Cell Filters with E-Pleat® Media Technology
Parker LoadTECH® high-impact polystyrene (HIPS) HVAC filters feature proprietary E-Pleat® media technology to hold two times the dust as conventional rigid cell style filters. The 4-inch design offers the same filtration performance as a 12-inch filter but in a much smaller envelope, resulting in simplified handling plus reduced storage space requirements and shipping costs. Ideal for variable air volume systems
• Proprietary E-Pleat media technology efficiently directs airflow through the filter
• Exclusive gold synthetic media with embossed design holds two times more dust
• Media resists tearing, damage, moisture, and microbial growth
• Longer filter life and fewer filter changeouts with higher dust-holding capacity
• 12-inch filter performance in a compact 4-inch design
