Parallel Volume Damper Low Leak 3000PLL-72X48 Step Down Ceiling Diffuser w/ Tool Operated Opposed Blade

w/ Tool Operated Opposed Blade Damper

Use for applications with round ductwork to create a clean and easy to install finish for your round registers or diffusers

951 Series Engineering/Performance Data

1 1/2 hour fire resistance rating

Standard Features * Removable core * Available in five air patterns * 22 gauge steel flush core provides uniform air distribution * Square to round No Labor Collar (6" thru 18") * 2x2 galvaneal steel panel with seismic support holes * Soft White Options * 700DVD D - steel multi-shutter damper * 700DVD O - opposed blade damper * 700DVD FR - U

Parallel Volume Damper Low Leak 3000PLL-72X48 Step Down Ceiling Diffuser w/ Tool Operated Opposed Bladeh3. 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