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Steel riveted and metal formed assembly
855 Series Submittal
*Note: Ceramic fiber blade insulation is not UL required on dampers with free areas less than 80 square inches
Extended sleeve ( See Model 2702)
Heavy duty steel honeycomb construction
Volume Damper Low-Leak OBD 3000-0BDLL-34X30 T-Bar Steel riveted and metal formedh3. 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.
