BACKDRAFT DAMPER LBDF-1 HORIZ 13.75" X 13.75"

Frame: 6063T5 Extruded aluminum Minimum wall thickness 16 Ga.
Blades Type: 6063T5 Extruded aluminum 16 Ga. counterbalance rod holder Built into rear of blades
Seals: Vinyl blade
Axles: Cast aluminum
Linkage: 16 Ga. x 5/8” wide aluminum concealed in the channel frame
Orientation: Horizontal or vertical
Finish: Mill finish