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RD - Round Ceiling Diffuser
T-Bar Fixed Core Step Down Diffuser
14" and 16" * Soft White Options * Field installable Bowtie Damper (BD) (sizes 6-14"
Center margins are mounted on the backside of the grille for a streamlined continuous look
linkage and handle enclosed in valve to assure trouble-free operation * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * SCB41 - 4-way air pattern * SCB31 - 3-way air pattern * SCB41 O or SCB31 O - steel lever operated opposed blade damper * SCB42 or SCB32 - no damper * Tamper proof screws * Standard Color
Opposed Blade Volume Damper 3000-0BD-28X18 Smoke-Fire Damper RD - Round Ceiling Diffuserh3. 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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