Field Controls 10 Gas Vent Damper GVD-10PL The Field Vent Damper works automatically to allow natural draft during appliance operation while preventing residual appliance heat and conditioned air from escaping during off cycles. It also prevents the infiltration of cold air during down drafts. Stainless steel. The Field Vent Damper is installed in the vent pipe, after the draft hood, or barometric. During off cycles, it remains closed, preventing air flow through the vent. When there is a call for heat, the motor is energized, rotating the damper 90° to an open position. Opening and ...

12" Barometric Relief Damper with weighted arm.

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

Damper opens with air flow and closes when the air flow stops. Spring loaded with positive closure and a rubber gasket. 8".

ACP, ACL-F-18x48, Combination Louver / Damper with Flange 18"W x 48"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