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3/16” holes on 1/4” staggered centers Extruded aluminum frame with signature line marks Perforated material 58% free area Countersunk mounting holes for flush appearance with color matching Phillips posi- drive screws Rust resistant pre-coat with durable powder finish Soft White
Fits 1x1 ceiling grids (collar size 6"-10")
Opposed Blade Damper standard on 4" widths
Countersunk mounting holes for flush appearance with color matching Phillips Pozidriv screws
Parallel Volume Damper Low Leak 3000PLL-66X18 Commercial 3/16” holes on 1/4” staggeredh3. 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
