Backdraft Damper 20" - 411-STD 20

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

The Hat Channel is an extruded aluminum motorized volume control damper. The hat channel frame is 5" deep with 7" wide center-pivoted blades for a full 90 degree rotation with parallel blade action. The TPV blade and 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 a vertical or horizontal position; typically walls, curbs, or ductwork. Comes standard with an internally mounted factory installed 100-240 volt power open / spring close motor with an end switch. MADE IN THE USA

Combination Louver / Damper - The Model ACL offers superior resistance to rain and weather while also offering you the ability to completely close the opening off if needed. The channel frame is 4" deep with a 1-1/2" flange and drainable 45 degree fixed blades in the front with adjustable blades with seals for tight shutoff in the back all within one frame. The adjustable rear blades are operated with a thumb screw and come standard with birdscreen on the back. MADE IN THE USA

ACP, ACL-F-36x18, Combination Louver / Damper with Flange 36"W x 18"H Combination Louver / Damper - The Model ACL offers superior resistance to rain and weather while also offering you the ability to completely close the opening off if needed. The channel frame is 4" deep with a 1-1/2" flange and drainable 45 degree fixed blades in the front with adjustable blades with seals for tight shutoff in the back all within one frame. The adjustable rear blades are operated with a thumb screw and come standard with birdscreen on the back. MADE IN THE USA

Backdraft damper for circular ducts, manufacturedfrom galvanized sheet metal. The two bladesare spring-loaded. Every damper is built with performance in mind. The damper can be mountedvertically.