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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25
One piece steel frame
w/ Screwdriver Operated Opposed Blade Damper
PERFORMANCE DATA
450 Series Engineering/Performance Data
2750 Series - 3 Hour Radiation Ceiling Butterfly Damper Size:18 One piece steel frameStandard Features Round ceiling radiation butterfly damper Designed for protection of ceiling openings in fire rated floor ceiling assemblies with fire resistance ratings of 3 hours or less UL listed and tested in accordance with UL Standard 555C 3 hour fire resistance rating Building materials rated 3 hours or less CSFM California State Fire Marshal listed Zinc plated steel closure spring All steel parts with galvanized finish or zinc coating 22
US$ 25.00
US$ 50.00
US$ 187.50
