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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
Margin edges are 7/8" projection for baseboard installation
Square collar designed for 20” × 20” duct
850 Series Submittal
linkage and handle enclosed in valve to assure trouble-free operation * Soft White Options * 955 O - steel opposed blade damper * Tamper proof screws * Standard Color or Designer Color Finish available on this product
3/4" round collar
Volume Damper Low-Leak OBD 3000-0BDLL-20X14 Residential Registers & Grilles Margin edges are 7/8" projectionh3. 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.
