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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
see 1560 Series * Tamper proof screws * Standard Color
w/ Screwdriver Operated Opposed Blade Damper
450 Series Engineering/Performance Data
2" ADC compliant round collar with a bead for ease of installation
Extended sleeve (2751)
2750 Series - 3 Hour Radiation Ceiling Butterfly Damper Size:18 see 1560 Series * TamperStandard 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
