Parallel Volume Damper Low Leak 3000PLL-34X24 Smoke-Fire Damper 1/2" spacing dual angular louvers

1/2" spacing dual angular louvers

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

1" and 1 1/2"

2" thin-line roll formed out-of-airstream frame

linkage and handle enclosed in valve to assure trouble-free operation * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * SCB41 - 4-way air pattern * SCB31 - 3-way air pattern * SCB41 O or SCB31 O - steel lever operated opposed blade damper * SCB42 or SCB32 - no damper * Tamper proof screws * Standard Color

Parallel Volume Damper Low Leak 3000PLL-34X24 Smoke-Fire Damper 1/2" spacing dual angular louversh3. 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