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Adjustable directional dampers with shut-off
904 - Double Deflection Adjustable Aluminum Blade Grille For a 34" x 18" Duct Opening (front blades parallel to shortest dimension)
Dampers above 80 square inches free area will be provided with blade insulation
Standard Features * Full size fixed blade T-Bar lay-in return air grille * Fixed Blade * Square collar * For 22"x22" square duct * Soft White Options * 900 T O - opposed blade damper * No Labor Collar - square to round (2x2 only) * 1x2 panel (10"x22" duct) or 2x4 panel (22"x46" duct) * Satin Anodized Finish available on this product
1/2” Wide x 1/2” High square holes
Volume Damper Low-Leak OBD 3000-0BDLL-24X34 Commercial Adjustable directional dampers with shut-offh3. 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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