Parallel Volume Damper Low Leak 3000PLL-68X60 Smoke-Fire Damper 425 Series Engineering/Performance Data

425 Series Engineering/Performance Data

Designed for use in walls

Adjustable aluminum curved blades

1 for each end)

For ceiling or sidewall applications

Parallel Volume Damper Low Leak 3000PLL-68X60 Smoke-Fire Damper 425 Series Engineering/Performance Datah3. 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