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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29
Maximum dimension 48w
Margin edges are 7/8" projection for baseboard installation
Ceiling opening must be 4” larger in length and width than the nominal duct size
Blades are parallel to the shortest dimension
Square or rectangular for vertical mount only
Parallel Volume Damper Low Leak 3000PLL-50X50 Smoke-Fire Damper Maximum dimension 48wh3. 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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