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Front blades are parallel to the shortest dimension
Tool operated Opposed Blade Damper
2550 Series Submittal
Low profile design for tight mechanical areas
Designed for protection of ceiling openings in fire rated floor/ceiling assemblies with fire resistance ratings of 3 hours or less
Opposed Blade Volume Damper 3000-0BD-54X16 Accessories Front blades are parallel toh3. 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.
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