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TVB - Thermal Vapor Blanket
Standard Features * 1 1/2 hour rated fire damper * 2549 - Round damper for vertical mount only
Standard Features * Designed for return or exhaust applications * 3/16" holes on 1/4" staggered centers * Heavy gauge steel * Seismic support holes * 1x2
Free area equals more than 75% of nominal size
CB-T Series Submittal
Parallel Blade Volume Damper 3000P-32X28 Step Down Ceiling Diffuser TVB - Thermal Vapor Blanketh3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee 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. Options * 3000 PLL Low Leak Air Control
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