Parallel Volume Damper Low Leak 3000PLL-46X26 Smoke-Fire Damper For damper free area chart

For damper free area chart A click here * 2563 - Out-of-Airstream fire door

* Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Driftwood Tan Options * TD Series - with damper

165° standard * All sizes utilize one main curtain stay * Galvanized finish h3

alternate frame is extruded aluminum with signature line marks

Low profile design for tight mechanical areas

Parallel Volume Damper Low Leak 3000PLL-46X26 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