Parallel Volume Damper Low Leak 3000PLL-66X56 past 12 months 12" and 14") * HVD

12" and 14") * HVD OR - factory installed opposed radial damper (sizes 6"-14") * HVD FR - U

Available 4" thru 40" round

1/4” Wide x 1-27/32” High slots

1 1/2 hour fire resistance rating

Parallel Volume Damper Low Leak 3000PLL-66X56 past 12 months 12" and 14") * HVDh3. 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