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Individually welded 14 guage diffusion bars
Countersunk mounting holes for flush appearance with color matching Phillips posi- drive screws
Options * 3000 PLL - Low Leak Air Control Damper
Plated Metal or Wood Finish available on this product
Volume Damper Low-Leak OBD 3000-0BDLL-70X54 Specialty Products Individually welded 14 guage diffusionh3. Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee 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.
