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Access door with 1-3/8" deep steel roll formed frame
904 - Double Deflection Adjustable Aluminum Blade Grille For a 42" x 18" Duct Opening (front blades parallel to shortest dimension)
1x2 T-Bar (10" x 22" duct)
Fixed bars with 0° deflection
available with one
Opposed Blade Volume Damper 3000-0BD-68X62 Smoke-Fire Damper Access door with 1-3/8" deeph3. 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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