Architectural Louvers, Dampers, Roof Curbs, Actuators, Grilles, Sunshades and more.


Parallel Blade, Heavy Duty, Flanged, Steel Frame, Aluminum Airfoil Blades, up to 13" w.g.


The Model AH-621 is a heavy duty flange frame style industrial control damper. It has a 10 gauge galvanized steel frame and hollow airfoil extruded aluminum blades. This model also offers heavy duty jamb linkage, 3/4" plated steel axles, and stainless steel sleeve type bearings. For sizes over 60"w x 96"h there is a multi-section charge for jackshafting.