Fantech 12" Back-Draft Damper for Circular Duct, Single

Backdraft Dampers are non-flanged horizontal mount exhaust backdraft damper. The frame is galvanized steel with aluminum blades. The blades have a felt seal on the leading edge for quiet closing and better protection from the weather. Spring assisted to allow the blades to open quickly. Ideal for use in roof curbs, ductwork, or wall collars when using a fan or power roof ventilator. Recommended for horizontal mount exhaust applications. MADE IN THE USA

Heavy duty motorized volume control dampers. The 1-1/2" flanged frame has welded corners for added strength. The 6" wide blades are center-pivoted for a full 90 degree rotation with parallel blade action. The stainless steel jamb seals help in keeping out light, air, and moisture. The dampers can be used for exhaust or supply applications and can be mounted in either a vertical or horizontal position; typically walls or curbs. Comes standard with an internally mounted factory installed 100-240 volt power open / spring close motor with end switches. MADE IN THE USA

Manufactured from 19-gauge galvanized steel frame 2" deep with 1" flange. For quiet operation aluminum blades have felted edges. Pre-punched conduit hole knock-out. Class 1.

Shut-off damper ADC is a 2-position, motorized damper without end switch. The damper is powered open with 24V AC, and is normally closed with spring return. Power supply wiring is connected to the lead wires attached to the damper motor. Positive closure is provided by a tight seal.

American Louver Balancing Damper, Radial, Galvanized steel, 12", PK10 Galvanized steel radial damper helps to control air flow through air vents. Easily adjust opening with a screw driver. Fits on diffusers with 12" neck. Package of 10. Available in 6", 8", 10", 12", and 14".