Industrial Backdraft Damper - Fiberglass - Triple-V Blade - FRP-BD-84

Standard Construction

Frame: 8" x 2-3/16" x 1/4" (203 x 56 x 6) vinyl ester resin.

Blades: Triple "V" groove 6-5/8" x 1/8" thick (168 x 3).

Axles: 3/4" (19) diameter pultruded fiberglass axles. 316SS axles on blades with counter weights.

Linkage: 316SS out of airstream.

Counterbalance Assembly: 316SS out of airstream.

Bearings: Molded PTFE.

Minimum Size: 6" x 8" (152 x 203)
Maximum Size: 48" x 72" (1219 x 1829)

Ratings

Leakage with Low Leakage Seals:

60.0 cfm/ft² @ 1 in. wg. (0.305 m³/s/m² @ 0.25 kPa) for 12" (305) damper width
40.0 cfm/ft² @ 1 in. wg. (0.203 m³/s/m² @ 0.25 kPa) for 24" (610) damper width
32.0 cfm/ft² @ 1 in. wg. (0.163 m³/s/m² @ 0.25 kPa) for 36" (914) damper width
32.0 cfm/ft² @ 1 in. wg. (0.163 m³/s/m² @ 0.25 kPa) for 48" (1219) damper width

Maximum Temperature: -20^oF to 200^oF (-28^oC to 94^oC)