Parallel Volume Damper Low Leak 3000PLL-50X50 Smoke-Fire Damper For damper free area chart

For damper free area chart A click here * 2663 - Out-of-Airstream fire door

and 2x4 panels * Soft White

Spring actuated curtain-type fire damper with 2 1/4" round connection for horizontal or vertical mount

Available 6

Blades are parallel to the shortest dimension

Parallel Volume Damper Low Leak 3000PLL-50X50 Smoke-Fire Damper For damper free area charth3. 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