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Round ceiling radiation butterfly damper
Locking screw to hold damper in place
Standard Features * Individually adjustable curved blade T-Bar diffuser * Core is constructed of
Ceramic fiber blade insulation with fiberglass cover*
Parallel Volume Damper Low Leak 3000PLL-68X40 past 12 months Round ceiling radiation butterfly damperh3. 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
