Parallel Volume Damper Low Leak 3000PLL-58X44 Specialty Products Collar sizes available in 6”–10”

Collar sizes available in 6”–10”

built-in vanities

Nylon bushings on adjustable blades prevent metal on metal rattle

Non-standard size collar (available in 6" through 20")

Adjustable directional dampers with shut-off

Parallel Volume Damper Low Leak 3000PLL-58X44 Specialty Products Collar sizes available in 6”–10”h3. 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