36"H-W Aluminum Ceiling Truss Damper for 36" Fan

In Packaging?: Yes

Damaged?: Unknown


Ceiling- and roof-mount dampers install horizontally onto openings in the ceiling or roof and help prevent backflow. They feature spring-loaded blades that open when the HVAC system is running and close when it is not to prevent conditioned air from flowing backward and leaving the occupied space. Brand: DAYTON Manufacturer Part Number: 4HA12 Rough Opening Shape: Rectangular Number of Panels: 1 Mounting Location: Ceiling Mounting Position: Horizontal Fits Fan Diameter: 36 in Overall Height: 37-3/4 in Overall Width: 36 in Open Depth: 5 in Frame Depth: 1-3/8 in Rough Opening Length: 35-3/4 in Rough Opening Width: 34 in Free Area: 7.1 sq ft Flange Type: Reversed Flange Flange Width: 1-5/8 in Frame Material: Aluminum Blade Material Thickness: 26 ga Blade Material: Aluminum Blade Seal Material: Felt Tie-Rod Material: Galvanized Steel Frame and Tie Rods Maximum Pressure: 1 in wc Maximum Air Velocity: 1500 fpm Airflow Direction: Horizontal Switch Action: Normally Closed Mounting Hole Diameter: 1/4 in Series: CTRF Rough Opening Dims: 35-3/4 in x 34 in Overall H x W: 37-3/4 in x 36 in Blade: Aluminum Blade w/ Felt Seal Flange Type & Width: Reversed Flange 1-5/8 in Width Flange Type_norm: Reversed Flange.