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22 gauge butterfly style galvanized steel blades
165° standard * All sizes utilize one main curtain stay * Galvanized finish h3
listed Fire-Resistance Diffusers * TVB - Thermal Vapor Blanket * Square collar
855 Series Submittal
Volume Damper Low-Leak OBD 3000-0BDLL-66X62 T-Bar 22 gauge butterfly style galvanizedh3. 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.
