Parallel Volume Damper Low Leak 3000PLL-68X56 Residential Registers & Grilles For evaporative cooling or high-velocity

For evaporative cooling or high-velocity exhaust applications

For damper free area chart B click here * 2565 - Round fire door for vertical mount only

Standard Features * 2533 - Square or rectangular for vertical mount only

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

Parallel Volume Damper Low Leak 3000PLL-68X56 Residential Registers & Grilles For evaporative cooling or high-velocityh3. 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