Schaefer WS-180 Aluminum Exhaust Fan Shutter Outlet 18 Inch cool machines cm3500 Schaefer CS300 is a 1/2

Schaefer CS300 is a 1/2 HP 2 speed fan motor

SCHAEFER VK24-BWSC Versa-Kool Circulation Fan

Schaefer 36CFO OSHA Compliant Air Circulation Fan 36 Inch

Slide out airlock

Airlock size: 4 inch O

Schaefer WS-180 Aluminum Exhaust Fan Shutter Outlet 18 Inch cool machines cm3500 Schaefer CS300 is a 1/2Schaefer WS 180 WS 180 Aluminum Exhaust Fan Shutter Outlet 18 Inch Schaefer WS 180 aluminum shutter is built tough to last a lifetime in the harshest environments. Schaefer's aluminum fan shutters restrict the airflow to one direction & are utilized as building air flow inlets, for feeding exhaust fans, or to prevent air intrusion when exhaust fans are not operating. Features Constructed with brushed heavy duty aluminum which provides corrosion