- Airtech Products, Inc.
- Aluminum louvers / shutters, bug screens, actuators, surge tanks and axial fans for air-cooled heat exchangers and cooling towers.
- Arrow United Industries
- Offers louvers and dampers as well as walk-in and access doors.
- Cesco Products
- Manufacturer of air ventilation and control products for the heating, air conditioning and ventilating industry.
- Fox Equipment
- Manufacturing louver dampers and expansion joints to control and isolate process gases in industrial applications.
- Louvers and Dampers
- Manufactures a complete line of high performance, AMCA certified louver, penthouse, gravity vent, roof curb, control damper and UL rated life safety damper products .
- LR West
- Manufactures quality, aluminum fan shutters for greenhouse, industrial, commercial fan applications.
- Metropolitan Air Technology LLC
- Manufactures manual remote control (cable operated) dampers.
- NCA Manufacturing, Inc.
- Manufacturer of louvers, fire, smoke, and control dampers for the HVAC industry.
- Pottorff
- Manufacturer of dampers, louvers, air controls, backdraft dampers, UL products, actuators.
- Safe Air - Dowco
- Manufactures quality dampers and louvers for commercial and industrial type of construction involving the architectural and mechanical market.
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