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Locking screw to hold damper in place
Designed for protection of ceiling openings in fire rated floor/ceiling assemblies with fire resistance ratings of 3 hours or less
All steel galvaneal construction
Steel multi-shutter damper
* 2650 - Round spring actuated (6) damper for vertical or horizontal mount
Parallel Blade Volume Damper 3000P-22X20 Step Down Ceiling Diffuser Locking screw to hold damperh3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee 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. Options * 3000 PLL Low Leak Air Control
