Harrington Industrial Plastics - Koch Filter Logo

Koch Filter is a leading manufacturer of indoor air filtration solutions that protect the quality of life for individuals while protecting processes and equipment in the workplace.

Koch Filter is recognized globally for its premier brand of high efficiency air filtration products and the industry's broadest range of air filters for any application.

Koch Filter is a leading manufacturer of indoor air filtration solutions that protect the quality of life for individuals while protecting processes and equipment in the workplace.

Koch Filter’s offerings are one of the broadest in the industry, which include medium and high efficiency filters, HEPA filters, disposable commercial and Industrial filters, automatic roll filters, pocket filters, pleated filters, carbon and gas phase filters, industrial coatings filtration, filter frames and housings, industrial cartridges and more!

Primary applications for Koch Filter products range from residential to commercial and industrial applications, as well as specialty environments. KOCH filters provide the highest level of filtration available and are widely used in hospitals, clean rooms, pharmaceutical plants, and in hundreds of other systems where clean air is critical in the protection of people, processes and equipment.

The Harrington Difference
Providing over 60 years of exceptional service

Harrington is a leading Koch Filter distributor. Call our toll-free number at 1-800-213-4528 and you will be connected to a live person – not a recording. You can also use the contact form below for any questions regarding our full line of Koch Filter products.

Harrington Industrial Plastics - Koch Filter

Koch Filter Corporation - BioMAX HEPA Filters

Koch Filter Corporation BioMAX HEPA Filters are designed to provide the highest level of filtration available for commercial and industrial applications. They are widely used in hospitals, clean rooms, pharmaceutical plants, and in hundreds of other systems where clean air is critical in the protection of people, processes and equipment. BioMAX HEPA Filters are constructed using the highest quality components available and are available in efficiencies of 99.97%, 99.99% and 99.999% on 0.3 micron size particles. Standard construction BioMAX HEPA Filters are manufactured with galvanized steel cell sides (UL Class 1) or particle board cell sides (UL Class 2). Multiple cell side options are also available.

Harrington Industrial Plastics - Koch Filter

Koch Multi-Pleat XL11 Air Filter

The Koch Multi-Pleat XL11 is a medium efficiency extended surface pleated panel filter, engineered to provide higher initial efficiencies and better overall performance than standard pleated filters. The Multi-Pleat XL11 carries a MERV 11 fractional efficiency rating in accordance with ASHRAE Test Standard 52.2. The filter will also provide an Initial Dust Spot Efficiency of 45%, and an Average Dust Spot Efficiency of 55-60% in accordance with ASHRAE Test Standard 52.1. The MERV 11 efficiency ratings provided by the Multi-Pleat XL11 make the filter an excellent upgrade from disposable filters and ordinary pleated filters in applications such as hospitals, laboratories and pharmaceutical plants, commercial office buildings, and in any system in which a higher degree of clean air is required.

Harrington Industrial Plastics - Koch Filter

Koch Multi-Pleat XL8 Air Filter

The Multi-Pleat XL8 carries a MERV 8 and MERV-A 8 performance rating in accordance with ASHRAE Test Standard 52.2-2007. The MERV 8 and MERV-A 8 performance rating provided by the Multi-Pleat XL8 make the filter an excellent upgrade from disposable filters and standard MERV 6 and 7 rated pleated filters. The Multi-Pleat XL8 is the best selection in applications such as hospitals, laboratories, pharmaceutical plants, commercial office buildings, and in any system in which a higher degree of indoor air quality is required.

Harrington Industrial Plastics - Koch Filter

Koch Multi-Pleat Green 13 Air Filter

The Green 13 is a sustainable component of green building development. By virtue of its MERV 13 performance rating, the Green 13 can earn points toward LEED certification in the US Green Building Council’s Green Building Rating System. (LEED is Leadership in Energy and Environmental Design, an integral part of the rating system). The MERV 13 performance ratings provided by the Multi-Pleat GREEN 13 make the filter an excellent upgrade from disposable filters and ordinary pleated filters in applications such as hospitals, laboratories and pharmaceutical plants, commercial office buildings, and in any system in which a higher degree of clean air is required.
Harrington Industrial Plastics - Koch Filter

Koch Multi-Sak Air Filter

The Koch Multi-Sak is an extended surface air filter designed for most medium and high efficiency air filtration systems. The Multi-Sak is capable of operating in systems with rated face velocities of 500 CFM to 3000 CFM. Available efficiencies range from 20% to 95%, and seven standard face sizes are offered. This broad spectrum of styles and models makes the Multi-Sak extremely versatile and suitable for almost any commercial or industrial air handling system. Multi-Sak filters are presently in use in over 20,000 applications, including hospitals, automotive plants, office buildings, universities, pharmaceutical facilities, and sports arenas around the world.

Envirco IsoClean®

The Envirco Hospi-Gard® IsoClean® is a portable, self-contained high efficiency particulate air (HEPA) filtration system designed to easily and economically create a negative pressure isolation room/environment that will meet OSHA and CDC TB guidelines.
Envirco Hospi Gard

The IsoClean® can be used as a positive pressure clean air recirculating system in clinics, waiting rooms, hospital emergency rooms and other confined areas or as a partial or complete exhausting system to create a negative pressure isolation room for possible use with patients known or suspected of having TB, SARS or other infectious diseases.

As a recirculating unit, the IsoClean®’s powerful motor/blower can deliver from 560 CFM (951 m3/hr) up to 800 CFM (1359 m3/hr) to provide a large number of room air changes per hour to minimize the spread of airborne diseases to patients and health care workers.

As a negative pressure unit, the air passing through the HEPA filter is cleansed of 99.99% of particles as small as 0.3 micron and may be exhausted directly to the exterior through a window, or through a wall simply by connecting flexible ducting to the 6 in. (152 mm) collar located on the top of the IsoClean®. 

The Hospi-Gard® IsoClean® filter contains 220 square feet (20.4 square meters) of media to extend its usable lifetime before filter loading occurs, resulting in decreased cost and fewer filter changes.

Standard Features

Low Cost Isolation Room

An easy and economical solution for creating a negative pressure, isolation room. Simply roll the IsoClean® into a standard room, connect flexible ducting tothe 6 in. (152 mm) collar on the top of the unit for partial exhaust or to the optional 8 in. (204 mm) flanged collar for total exhaust and vent the purified air to the exterior through a window or wall.

Low-High Clean Air Circulation Pattern

Room air, along with airborne contaminants, is drawn into the intake grille at the bottom while the purified air is discharged at a high velocity from the exhaust grille located at the top of the IsoClean® to generate a sweeping, low-to high air circulation pattern with adequate “reach” to optimize the clean breathing zone for patient and staff.

Flexible Applications

The versatile IsoClean® can be used as a clean air recirculating unit, a negative pressure unit or as a split system to create both negative pressure and clean air recirculation by simultaneously exhausting some of the air out while recirculating the remainder back into the room.

Room Air Changes Per Hour

Provides up to 24 room air changes per hour (ACH) in a typical 18 x 12 x 8 ft (5.5 x 3.7 x 2.4 m) patient room or up to 12 ACH for rooms up to 3,900 cubic feet (100 cubic meters).

Small and Portable

The IsoClean® can be rolled from one room to another and easily fits into areas with limited floor space.

Quiet Operation

52 dBA on low, 56 dBA on medium and 60dBA on high speed measured 30 in. (762mm) from face of the unit.

3-Speed Adjustable Airflow

The IsoClean® provides effective air filtration for a wide variety of room sizes with speeds ranging from 560 to 800 CFM (951-1359 m3/hr).

Simple Maintenance

Both HEPA filter and prefilter are easily accessible for replacement by authorized personnel.

Envirco IsoClean 400

Koch Filter Corporation carries a must-have product for current times: the Envirco IsoClean 400 & 400UV. These portable HEPA air filtration units reduce the transmission of airborne pathogens, such as COVID-19. These smaller units are designed to clean areas such as classrooms, gyms and offices. The Aluminum frame HEPA filter comes standard with 99.99% efficiency at 0.3 microns.

Harrington Industrial Plastics - Envirco IsoClean

How does it work?

  • The air is drawn into the lower portion of the unit toward the pre-filter
  • The pre-filter begins the process of filtering out contaminates such as dust, dirt and dander
  • The air then moves toward the HEPA filter (MERV13 is recommended) which combats airborne pathogens
  • If the 400UV Model is selected, the UV-C light then disinfects and destroys many indoor pollutants such as virus, bacteria and mold
  • The air is cleansed and returned to the environment, creating a healthy and safe atmosphere
Buy your next Koch Filter product from Harrington and experience the difference.

Can’t find what you’re looking for?

Call our toll-free number at 1-800-213-4528 and you will be connected to a live person – not a recording. You can also use the contact form above for any questions regarding Koch Filter products.