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remove the two center cones as a unit and reposition the six screws
Hand operated level for easy filter access and cleaning
904 - Double Deflection Adjustable Aluminum Blade Grille For a 24" x 6" Duct Opening (front blades parallel to shortest dimension)
Adjustable steel curved blades
Square collar designed for 20” × 20” duct
Parallel Volume Damper Low Leak 3000PLL-70X12 Step Down Ceiling Diffuser remove the two center conesh3. 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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