Parallel Volume Damper Low Leak 3000PLL-64X58 Step Down Ceiling Diffuser Reinforced welded core and extra

Reinforced welded core and extra supports for heavy duty application

* UL and California State Fire Marshall approved * 4-1/4" standard frame style * Maximum dimension 60w

Opposed Blade Damper

3-hour fire resistance rating

Spiral Diffuser Radius Flush Mount Diffuser Single Deflection with Damper

Parallel Volume Damper Low Leak 3000PLL-64X58 Step Down Ceiling Diffuser Reinforced welded core and extrah3. 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