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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24
blades prevent metal on metal rattle
are enclosed in the valve to assure trouble free operation * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Steel multi-shutter damper * Soft White Options * 845 O - steel lever operated opposed blade damper * Tamper proof screws * Standard Color
Extended sleeve (2751)
904 - Double Deflection Adjustable Aluminum Blade Grille for a 48" x 18" Duct Opening (front blades parallel to shortest dimension)
Back blades are parallel to the longest dimension
Volume Damper Low-Leak OBD 3000-0BDLL-72X48 Specialty Products blades prevent metal on metalh3. 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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