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904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 30" Duct Opening (front blades parallel to shortest dimension)
remove the two center cones as a unit and reposition the six screws
2x4 T-Bar (22" x 46" duct)
SUBMITTAL RS52 Series Submittal
linkage and handle enclosed in valve to assure trouble-free operation * Soft White Options * 955 O - steel opposed blade damper * Tamper proof screws * Standard Color or Designer Color Finish available on this product
Parallel Volume Damper Low Leak 3000PLL-38X28 Step Down Ceiling Diffuser 904 - Double Deflection Adjustableh3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee 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. Options * 3000 PLL Low Leak Air Control
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