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DynaGuard Logo
Air-Cooled Temp/Guard
For more information contact us at: info@mtlfab.com
Spiral Duct Diffuser
Vinyl Siding Shield
For more information contact us at: info@mtlfab.com
Stamped Floor Register (Heavy Duty)
Stamped Floor Register (Heavy Duty)
For more information contact us at: info@mtlfab.com
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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MFDUS3

Static Fire Damper

Model – MFDUS3 (Ultra Slimframe, 3-Hour Rated)
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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