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Ships within 48 hours · Estimated delivery Nov 16 - Nov 21
Negator stainless steel closure springs mounted on spring pin brackets
Designed for high volume air delivery
Dampers above 80 square inches free area will be provided with blade insulation
Steel construction
Soft white
Opposed Blade Volume Damper 3000-0BD-56X28 Residential Registers & Grilles Negator stainless steel closure springsh3. 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.
