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Center margins are mounted on the backside of the grille for a streamlined continuous look
½ × ½ × ½ Aluminum lattice
Spiral pipe diameter must be 4” larger than Height of the duct opening
Spiral Diffuser Radius Flush Mount Diffuser Single Deflec
Designer Color or Satin Anodized Finish available on this product Drawings * CB10 * CB20 * CB30 * CB40
Volume Damper Low-Leak OBD 3000-0BDLL-66X28 Smoke-Fire Damper Center margins are mounted onh3. 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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