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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
* UL and California State Fire Marshall approved * 4-1/4" standard frame style * Maximum dimension 60w
Countersunk mounting holes with color matching Phillips Pozidriv screws
Fractional Sizes
945 Series Engineering/Performance Data
904 - Double Deflection Adjustable Aluminum Blade Grille For a 18" x 14" Duct Opening (front blades parallel to shortest dimension)
Volume Damper Low-Leak OBD 3000-0BDLL-34X18 Residential Registers & Grilles * UL and California Stateh3. 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.
