Opposed Blade Volume Damper 3000-0BD-24X36 past 12 months 3% maximum leakage with a

3% maximum leakage with a pressure differential 3" W

Perforated Face Grille

Standard Features * Cones are one-piece stamped construction providing a clean

Steel construction

Ceiling opening must be 4” larger in length and width than the nominal duct size

Opposed Blade Volume Damper 3000-0BD-24X36 past 12 months 3% maximum leakage with ah3. 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.