Parallel Volume Damper Low Leak 3000PLL-66X40 Residential Registers & Grilles Retainer cables are provided on

Retainer cables are provided on sizes 12" and larger to allow the inner cones to hang securely while adjusting the diffuser

For evaporative cooling or high velocity exhaust applications

Hand operated level for easy filter access and cleaning

Adjustable directional dampers with shut-off

Back blades are parallel to the longest dimension

Parallel Volume Damper Low Leak 3000PLL-66X40 Residential Registers & Grilles Retainer cables are provided onh3. 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