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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24
Nylon bushings on adjustable blades prevent metal on metal rattle
Standard Features Double deflection surface mount grille with adjustable airfoil blades Front blades parallel to longest dimension
904 - Double Deflection Adjustable Aluminum Blade Grille For a 20" x 14" Duct Opening (front blades parallel to shortest dimension)
Standard Features * 4000 - door core grille with single frame * 4100 - door core grille with additional loose frame *
Maximum size 60"x48"
Parallel Volume Damper Low Leak 3000PLL-66X50 T-Bar Nylon bushings on adjustable bladesh3. 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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