Air Filters
Airsan Corp. - Air and Grease
Rutzler Filter Corporation
Quality Filters, Inc.
Clean Rooms International
Filtration Group
Glasfloss Industries
Sparks Air/Gas Filters

Filter Housings/Fan-Filter Units
Air Seal Filter Housings
CTC Bag-In Bag-Out Isolation
Pre-Tech, Inc.

Air Purifiers
HEPA-Kleen Air Cleaners
Howe-Baker Engineers
Purifan

HEPA VACS
Nikro Industries
Nortech Corporation

Circulation, Pedestal, and Cooling Fans / Electric infra-Red and Quartz Heaters / Gas, Patio, Portable, and Garage Heaters
Schaefer Ventilation Equipment

Activated Carbon / Chemical Media / Air Scrubbers for Air & Water
Cameron Great Lakes, Inc.
Circul-Aire
RSE

Modular Buildings/Cleanrooms
Clean Rooms International
National Partitions
Porta-Fab
Porta-King

Exhaust Fans / Gravity Ventilators
American Coolaire / ILG Industries
Breidert / Jenn / Stanley Fans
Brundage Blowers
Delhi Industries
Schaefer Ventilation Equipment
Twin City Fan Co. (TC Ventco)

Kitchen Canopies / Exhaust & Make- Up Air Systems
Greasemaster Kitchen
Larkin

Roof Curbs / Equipment
Portals Plus / RPS

Acoustical Turning Vanes
Airsan Corporation

Emergency Services Products
Kaza Fire Equipment
J.S. Neils PPV Fans
Schaefer Personnel Cooling/Heating