Parallel Volume Damper Low Leak 3000PLL-50X44 Residential Registers & Grilles Spiral Diffuser Radius Flush Mount

Spiral Diffuser Radius Flush Mount Diffuser Single Deflection with Damper

1/2" spacing dual angular louvers

One piece stamped steel frame on most common sizes

3 or 4 way patterns * Spring push release for easy access to adjust pattern controllers * Round No Labor Collar sizes: 6-10"

For evaporative coolers or central blower systems

Parallel Volume Damper Low Leak 3000PLL-50X44 Residential Registers & Grilles Spiral Diffuser Radius Flush Mounth3. 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