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Ships within 48 hours · Estimated delivery Oct 12 - Oct 17
1/4” crossbars
4-way flush step down steel diffuser
Single deflection radius mount spiral pipe grille with adjustable blades
Hinged removable extruded aluminum face frame with signature line marks
Steel galvaneal construction
Volume Damper Low-Leak OBD 3000-0BDLL-54X22 Step Down Ceiling Diffuser 1/4” crossbarsh3. 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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