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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
Available in even sizes 6" to 20" and 24"
Designed to minimize vision into the air duct
Opposed Blade Damper standard on 4" widths
904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 4" Duct Opening (front blades parallel to shortest dimension)
Opposed Blade Volume Damper 3000-0BD-42X30 Residential Registers & Grilles Available in even sizes 6"h3. 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.
