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904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 10" Duct Opening (front blades parallel to shortest dimension)
2750 Install Instructions
Install with louvers in up or down position for best duct concealment
Maximum size 14"x14"
Perforated face grille
Opposed Blade Volume Damper 3000-0BD-24X34 Commercial 904 - Double Deflection Adjustableh3. 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.
