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.
Metal-Fab dynamic 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.
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