Opposed Blade Volume Damper 3000-0BD-72X54 Residential Registers & Grilles Center margins are mounted on

Center margins are mounted on the backside of the grille for a streamlined continuous look

linkage and handle enclosed in valve to assure trouble-free operation * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Steel multi-shutter damper * Soft White Options * 200 O - steel lever operated opposed blade damper * Tamper proof screws * Standard Color

Recommended Minimum Sleeve Thickness for Fire Dampers

Round ceiling radiation butterfly damper

Perforated face grille

Opposed Blade Volume Damper 3000-0BD-72X54 Residential Registers & Grilles Center margins are mounted onh3. 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.