We offer several sizes of Aluminum Greenhouse Exhaust Shutters by American Cool Air. This exhaust shutter is an all aluminum damper featuring an extruded aluminum frame with interlocking aluminum blades for maximum weather seal. Double panel shutters 45″ and larger are constructed with a rigid ‘T’ section center member to prevent shutter blades from sticking. This shutter has nylon bearings on all movable linkage. A sturdy extruded aluminum tie-bar is connected exactly on the blade centers. Double panel shutters feature dual tie-bars (one for each panel). The LRW shutter can be gravity or motor operated (motor not included).
These aluminum exhaust shutters are constructed with a heavy duty aluminum extrusion frame with strong welded corners. These shutters are designed to be used with an exhaust fan. The shutters are also equipped with nylon bearings and tie bar to eliminate shutter flapping.