- A A Air Filters Inc
- Air Filter Spply & Totl Fltrtn
- Air Filters Inc
- Air Filtration Co
- Air Sponge Filter Co
- Airguard
- Airguard Industries
- Alabama Filter Co Inc
- American Air Filter
- American Air Filter
- Apollo Engineering
- Baldwin Filters Inc
- Baldwin Filters Inc
- Baldwin Filters Inc
- Baldwin Filters Inc
- BLC Industries Inc
- Bon-Aire Filters Inc
- Buchart Horn Inc
- Buchart Horn Inc
- Buchart Horn Inc
- Buchart-Horn Inc
- Buchart-Horn Inc
- Burnett Process Inc
- Camfil USA Inc
- Can AM Filter Group Inc
- CLARCOR Air Filtration Prods
- Clean Air Filter Co
- Cleanaire Alaska
- Collins Filter
- Complete Automation
- Complete Automation
- Compressed Air Filter Tech Inc
- Corcom Inc
- Cormetech Inc
- Cormetech Inc
- Corrpak Inc
- D-Mark Inc
- Davison Membranes
- Des-Case Corp
- Donaldson Co Inc
- Duralast Products Corp
- Dust Free Inc
- Dust Free Inc
- E M Cahill Co Inc
- Electromaze Air Filters
- Elmar Filter Corp
- Farr Co
- Farr Co
- Fiberlene Filters Inc
- Filter Service Of KS Inc
- Filter Services Inc
- Filter Services Inc
- Filter Tech
- Filtration Group Inc
- Filtration Group Inc
- Filtration Manufacturing Co
- Filtration Technology Corp
- Filtration Technology Corp
- Flanders Corp
- Flanders-Precisionaire
- Garber Air Filter Sales
- Glasfloss Industries Inc
- Glasfloss Industries Inc
- H & H Filters Mfg
- H & H Filters Mfg
- Hepa Corp
- Hepa Corp
- Hyland Filter Svc
- International Filter Mfg Corp
- Keltec Inc
- Koch Filter Corp
- Koch Filter Corp
- Lewcott Corp
- Mann & Hummel Advanced Fltrtn
- Mapco
- Master Pneumatic Detroit Inc
- Menardi
- Mid Atlantic Air Filter
- Moffatt's Products Co
- N C Filtration Corp
- National Filter Ctr
- National Filter Ctr
- Networks International Corp
- New England Filter Co Inc
- Osprey Corp
- Palm Beach Custom Air Filters
- Parker Hannisin
- Quality Filters Inc
- Royal Filter Mfg
- Scan Air Filter Inc
- Service Oil Co
- SPX Filtran
- SPX Filtran
- Spx Filtran
- Tidewater Air Filter Co
- TVS Cartridge Air Filters
- United Air Filter Co
