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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
Single deflection radius mount spiral pipe grille with adjustable blades
Hinged removable extruded aluminum face frame with signature line marks
Concealed mounting holes with mounting screws
1/4” crossbars
Volume Damper Low-Leak OBD 3000-0BDLL-54X22 Step Down Ceiling Diffuser Single deflection radius mount spiralh3. 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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