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Ships within 48 hours · Estimated delivery Sep 2 - Sep 7
Maximum size 60"x48"
904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 4" Duct Opening (front blades parallel to shortest dimension)
Countersunk mounting holes with color matching Philips posi-drive screws
Minimum size 4"x4"
linkage and handle enclosed in valve to assure trouble-free operation * Soft White Options * 955 O - steel opposed blade damper * Tamper proof screws * Standard Color or Designer Color Finish available on this product
Volume Damper Low-Leak OBD 3000-0BDLL-20X24 Accessories Maximum size 60"x48"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.
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