Parallel Volume Damper Low Leak 3000PLL-24X34 Smoke-Fire Damper Standard Features * Stamped steel

Standard Features * Stamped steel curved blade T-Bar lay-in diffuser with perforated face * Five air patterns: 101 P - one way

Hand operated level for easy filter access and cleaning

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

Standard Features * 2633 - Square or rectangular out-of-airstream fire damper for vertical mount only

Parallel Volume Damper Low Leak 3000PLL-24X34 Smoke-Fire Damper Standard Features * Stamped steelh3. 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