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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
round collar only) * 830 OR - factory installed opposed radial damper (sizes 6"-14") * 830 FR - U
inner dimension and outside dimension sizes available * Tamper proof screws * Standard Color
Available in even sizes 6" to 20" and 24"
1/2" spacing dual angular louvers
1550 Series Engineering/Performance Data
Volume Damper Low-Leak OBD 3000-0BDLL-58X50 Accessories round collar only) * 830h3. 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.
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