Opposed Blade Damper, Ultra Low Leakage, 16 Gauge Galvanized Frame, Class 1 and 1A, Acetal Bearings, 20" x 20"

Opposed Blade Damper, Ultra Low Leakage, 16 Gauge Galvanized Frame, Class 1 and 1A, Acetal Bearings, 24" Width x 20" Height

24" X 48" OPPOSED BLADE DAMPER

30"x22" OPPOSED BLD EXT RIGHT

36"x40" OPPOSED BLD EXT LEFT

16 X 10 Parallel Damper

D2 16X16 ParallelBlade ExtLeft

6"x12" OPPOSED BLADE EXT LEFT