HomeMy WebLinkAboutFile Documents.520 E Cooper Ave.0085.2018 (17).ACBK Fire Rated Submittal Sheet
2750CBA Series
1 Hour Ceiling Box Assembly Unit with Round
Ceiling Radiation Butterfly Damper
Additional Information:
Project / Location: Submittal Notes
Engineer:
Architect:
Contractor:
Last Revised: 6/14/2016
Model:
Description:
2750CBA
1 Hour Ceiling Box Assembly Unit with Round
Ceiling Radiation Butterfly Damper
Standard Features:
Factory assembled plenum box with top outlet and round ceiling radiation damper
UL rated for floor/ceiling and roof/ceiling assemblies L546, L521 and P522
Meets UL263 and NFPA 90A requirements
CSFM California State Fire Marshal listed
Ceiling Radiation Damper:
165° fusible link
22 gauge galvanized steel blades with ceramic fiberglass cover*
Roll formed 22 gauge galvanized steel frame
Plenum Box:
Plenum outer box made of 28 gauge galvanized steel
Roll formed 28 gauge galvanized steel collar with ¼” bead
Fiberglass duct board 1-1/2” thick (R6)
Minimum size 7”x7”x4” (collar)
Maximum size 16”x16”x12” (collar)
Options:
☐ Extended length drywall flange
☐ Stainless steel
Product Notes:
*Ceramic fiber blade insulation is not U.L. required on dampers with free areas less than 80 sq. inches. Dampers with free areas greater than 80 sq.
inches are constructed with ceramic fiber blade insulation.
520 E COOPERFIRE DAMPERS ARE REQURED FOR ALL MECHANICAL PENETRATIONS OF
THE RATED CEILING MEMRANE PER IBC 717.5.2 AND 717.5.4 VERIFY
APPROPRIATE MODEL IN FIELD
09/28/18