Parallel Blade Volume Damper 3000P-40X20 Step Down Ceiling Diffuser Nylon bushings for easy adjustment

Nylon bushings for easy adjustment and quiet setting of blades running parallel to shortest dimension

CB Series 6X6 REVIT Files

Tool Operated Opposed Blade Damper

3-hour fire resistance rating

Blades parallel to shortest dimension

Parallel Blade Volume Damper 3000P-40X20 Step Down Ceiling Diffuser Nylon bushings for easy adjustmenth3. 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