Opposed Blade Volume Damper 3000-0BD-22X20 Smoke-Fire Damper Egg Crate T-Bar Filter Grille

Egg Crate T-Bar Filter Grille 2"

Steel construction

Attractive concentric ring deflects air stream 360°

T-Bar hinged 2 Cone Step Down Diffuser with Round Collar

Diffuser Only (no damper)

Opposed Blade Volume Damper 3000-0BD-22X20 Smoke-Fire Damper Egg Crate T-Bar Filter Grilleh3. Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3.