Parallel Volume Damper Low Leak 3000PLL-66X30 Residential Registers & Grilles RD - Round Ceiling Diffuser

RD - Round Ceiling Diffuser

Tool Operated Opposed Blade Damper

375 Series Submittal

60% free area * Soft White Options * Countersunk screwholes with matching Phillips #8 x 1-1/2" oval Screws * 10 or 12 gauge steel * Tamper proof screws

1 for each end)

Parallel Volume Damper Low Leak 3000PLL-66X30 Residential Registers & Grilles RD - Round Ceiling Diffuserh3. 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