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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
1/2" spacing dual angular louvers
Standard Features * 2501 -Square or rectangular for vertical mount only
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 40" x 18" Duct Opening (front blades parallel to shortest dimension)
Lever Operated Opposed Blade Damper
Parallel Volume Damper Low Leak 3000PLL-56X36 Accessories 1/2" spacing dual angular louversh3. 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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