Filt Air Ltd
- Manufacturer of ULPA / HEPA filters and filtration products for cleanrooms, semiconductor manufacturing, biotechnology, hospitals, food processing and protection against nuclear, biological and chemical agents. Manufacturer of bipolar air ionization devic
- http://www.filt-air.com

Oscar Air, Inc
- Maker of commercial air cleaner air purification systems for homes, bars and restaurants. Includes technical data, testimonials, and product details.
- http://www.commercialaircleaner.net/

Air Care Technology Ltd.
- Specialized in cleanroom systems and air filtration.
- http://www.aircaretechnology.co.nz/

Trion
- Air purification systems. Provides company profile, links, and contact information.
- http://www.trioninc.com/

Healthy Air
- Offering air purification and dehumidification systems that bring fresh, filtered air inside. Also offering mold testing and remediation.
- http://healthyairusa.com

Camfil Farr
- Designs and manufactures air filters and filtration equipment for commercial and industrial buildings, manufacturing cleanrooms, diesel powered vehicles, and specialized OEM equipment.
- http://www.camfilfarr.com

Purafil
- Manufacturer of air cleaning and filtration product to protect people, electronics, and artifacts from airborne contaminants.
- http://www.purafil.com/

Koch Filter Corporation
- A manufacturer of air filtration products and for commercial, industrial, hospital, and paint filtration systems.
- http://www.kochfilter.com

Purolator Air Filtration
- Manufactures air filtration products to retail, wholesale, and commercial and industrial applications.
- http://www.purolatorair.com

Air Quality Engineering
- Manufacturer of air cleaners, purifiers, and filtration systems for industrial and commercial use.
- http://www.air-quality-eng.com/

PlymoVent
- Products include electronics, welding and mechanical industries as well as plastics, food and chemical industries.
- http://www.plymovent.com/

AAF International
- Manufactures air filtration and pollution control products and systems, including dust collectors, nuclear and biological filters, and gas turbine inlet air filtration, for industrial, commercial, and residential use.
- http://www.aafintl.com

Airguard
- Manufacturers of air filtration products for the commercial, industrial and institutional markets.
- http://www.airguard.com/