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Ships within 48 hours · Estimated delivery Sep 7 - Sep 12
Standard Features * 1/2" spaced vision-proof dual angular louvers for strength and maximum free area * Margin edges are 7/8" projection for baseboard installation * Soft White with color matching screws Options * 1133 - 1/3" spaced dual angular louvers * 1175 - added mullion stiffeners for greater strength * Standard Color
3% maximum leakage with a pressure differential 3" W
425 Series Engineering/Performance Data
AA-HVL Series Submittal
Available 4" thru 52" round
Volume Damper Low-Leak OBD 3000-0BDLL-64X44 Step Down Ceiling Diffuser Standard Features * 1/2" spacedh3. 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.
