Opposed Blade Volume Damper 3000-0BD-70X50 Residential Registers & Grilles Hinged perforated face with screwdriver

Hinged perforated face with screwdriver access to release

contour molded fiberglass back with a foil barrier backing

back blades parallel to longest dimension

Standard Features * Individually adjustable curved blade T-Bar lay in diffuser with concealed hinges * Hinged perforated face * Spring push release for easy access to adjust curved blades * 2x2 galvaneal steel panel with seismic support hangers * Round No Labor Collar sizes: 6-10"

Opposed Blade Volume Damper 3000-0BD-70X50 Residential Registers & Grilles Hinged perforated face with screwdriverh3. 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.