Backdraft Damper BDR2 Ruskin
FRAME
20 gage (1.0) galvanized steel up to 24" (610) diameter, 11"
(279) long.
BLADES
.016 thick (0.40) aluminum.
BLADE STOP AND AXLE KEEPER
20 gage (1.0) galvanized.
BLADE SEAL
Vinyl foam.
AXLES
3/16" dia. (4.8) plated steel.
FINISH
Mill galvanized frame, mill finished blades.
DAMPER SIZES
(D Diameter) 6", 7", 8", 9", 10", 12", 14", 16", 18", 20", 22", 24"
(152, 178, 203, 229, 254, 304, 356, 406, 457, 508, 559, 610).
MAXIMUM VELOCITY
2000 FPM.
MAXIMUM SYSTEM PRESSURE
2" w.g. (0.49 KPA)
TEMPERATURE LIMITS
-40°F (-40°C) to 180°F (80°C).