Opposed Blade Volume Damper 3000-0BD-24X36 past 12 months 7/8” Wide x 7/8” High

7/8” Wide x 7/8” High square holes

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

450 Series Submittal

Individually welded 14 guage diffusion bars

Opposed Blade Volume Damper 3000-0BD-24X36 past 12 months 7/8” Wide x 7/8” Highh3. 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.