Parallel Volume Damper Low Leak 3000PLL-48X48 Residential Registers & Grilles Ceramic fiber blade installation with

Ceramic fiber blade installation with fiberglass cover*

Modern step-down design with 4-way air diffusion

Standard Features * Designed for return or exhaust applications * 3/16" holes on 1/4" staggered centers * Heavy gauge steel * Seismic support holes * 1x2

Building materials rated 2 hours or less

Parallel Volume Damper Low Leak 3000PLL-48X48 Residential Registers & Grilles Ceramic fiber blade installation withh3. 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