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Ships within 48 hours · Estimated delivery Sep 25 - Sep 30
Tamper-proof Screws
Ceiling opening must be 4” larger in length and width than the nominal duct size
1/2" spacing dual angular louvers for strength and maximum free area
3/16" cross bars
linkage and handle enclosed in valve to assure trouble-free operation * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Steel multi-shutter damper * Soft White Options * 200 O - steel lever operated opposed blade damper * Tamper proof screws * Standard Color
Parallel Volume Damper Low Leak 3000PLL-46X12 Commercial Tamper-proof Screwsh3. 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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