Parallel Volume Damper Low Leak 3000PLL-68X20 Specialty Products alternate frame is extruded aluminum

alternate frame is extruded aluminum with signature line marks

2750 Install Instructions

see 2700 series)

Blades run parallel to longest dimension

Parallel Volume Damper Low Leak 3000PLL-68X20 Specialty Products alternate frame is extruded aluminumh3. 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