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Ships within 48 hours · Estimated delivery Oct 23 - Oct 28
1 1/2 hour fire resistance rating
Steel construction
Square to round transition collar
450 Series Submittal
HVL Series Submittal
Opposed Blade Volume Damper 3000-0BD-24X36 past 12 months 1 1/2 hour fire resistanceh3. 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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