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Install with louvers in up or down position for best duct concealment
904 - Double Deflection Adjustable Aluminum Blade Grille For a 24" x 18" Duct Opening(front blades parallel to shortest dimension)
Galvanized Finish
Hand operated lever for easy filter access and cleaning
Square collar designed for a 20” × 20”
Opposed Blade Volume Damper 3000-0BD-15X15 Specialty Products Install with louvers in uph3. 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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