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Standard Features *Surface mount return air grille * 45 fixed blades parallel to longest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 935 O - recessed screwdriver operated opposed blade damper * No Labor Collar (square sizes only) * 900 T - T-Bar mount * 905 HD - reinforced construction * 905 IS - insect screen * 1335-1338 Series - stainless steel version * Tamper proof screws
floors and partitions with fire resistance ratings of 2 hours or less (for ceiling application
12" and 14") * HVD OR - factory installed opposed radial damper (sizes 6"-14") * HVD FR - U
Maximum dimension 60x60 single
2701 Series Submittal
Volume Damper Low-Leak OBD 3000-0BDLL-58X26 T-Bar Standard Features *Surface mount returnh3. 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.
