Parallel Volume Damper Low Leak 3000PLL-22X16 Step Down Ceiling Diffuser Countersunk mounting holes for flush

Countersunk mounting holes for flush appearance

linkage and handle enclosed in valve to assure trouble-free operation * Soft White Options * 955 O - steel opposed blade damper * Tamper proof screws * Standard Color or Designer Color Finish available on this product

Extended sleeve (2751)

Square to round 2" collar with roll formed retention bead

Parallel Volume Damper Low Leak 3000PLL-22X16 Step Down Ceiling Diffuser Countersunk mounting holes for flushh3. 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