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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
Tamper-proof Screws
Blade lock to secure blades once the product is activated
" Spiral pipe diameter must be 4” larger than width of grille
Standard Features * Extruded aluminum (
Volume Damper Low-Leak OBD 3000-0BDLL-44X30 Commercial Tamper-proof Screwsh3. 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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