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700 CB20C - corner
904 - Double Deflection Adjustable Aluminum Blade Grille for a 48" x 18" Duct Opening (front blades parallel to shortest dimension)
Ceiling opening must be 4” larger in length and width than the nominal duct size
Double deflection radius mount spiral pipe grille with adjustable blades
Surface mount fixed blade grille with airfoil blades at 0°
Opposed Blade Volume Damper 3000-0BD-60X28 Commercial 700 CB20C - cornerh3. 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.
