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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
Note: Sizes are Listed Nominal Duct Opening
Hinged removable face with hinges parallel to longest side
904 - Double Deflection Adjustable Aluminum Blade Grille For a 40" x 18" Duct Opening (front blades parallel to shortest dimension)
Standard Features * 2633 - Square or rectangular out-of-airstream fire damper for vertical mount only
Opposed Blade Volume Damper 3000-0BD-60X36 Residential Registers & Grilles Note: Sizes are Listed Nominalh3. 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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