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Damper Group

Fire Dampers

Static Fire Dampers
Models MFD
Fire dampers covered under UL 555 are intended for installation in accordance with the NFPA 90A, “Standard for Installation of Air-Conditioning and Ventilating Systems”, the International Mechanical Code and the Uniform Mechanical Code.
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MFDUS

Static Fire Damper

Model – MFDUS (Ultra Slimframe)
Metal-Fab static fire dampers are tested and listed to UL 555.  Fire dampers feature a rigid roll-formed frame for precision and strength.  Fire dampers are available in a variety of sizes and configurations for a multitude of applications.  Fire dampers have been evaluated for fire resistance ratings of 1-1/2 or 3 hours.
 
Application
Intended for installation in ducts, air transfer openings and air distribution systems where walls, partitions, barriers or floors are penetrated.
Listings/Standards
UL 555
Construction
Frame:  22 gauge galvanized steel
Blades:  24 gauge galvanized steel
Transition: 20 gauge galvanized steel
Spring:  Stainless steel
Finish:  Mill galvanized
 

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