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Install with louvers in up or down position for best duct concealment
blade to blade neoprene seals
904 - Double Deflection Adjustable Aluminum Blade Grille For a 24" x 4" Duct Opening (front blades parallel to shortest dimension)
Countersunk mounting holes for flush appearance
Parallel Blade Volume Damper 3000P-40X16 Step Down Ceiling Diffuser Install with louvers in uph3. 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
US$ 31.99
US$ 16.95
US$ 28.99
US$ 12.99
