51CRVS-SS / 51CRHS-SS Stainless Steel Type CR Static Fire Damper
The Alumavent 51CRVS-SS/51CRHS-SS is a 1-1/2 hour label static fire damper constructed in Type 304 stainless steel, UL/ULC approved for use in HVAC systems where fans automatically shut down in the event of a fire alarm. The stainless steel construction provides excellent corrosion resistance for high humidity and corrosive atmosphere applications. The Type CR blade configuration is specifically designed for round ductwork, with blades positioned outside of the duct airflow path, and is suitable for use in fire separations with a fire resistance rating of 2 hours or less.
Standard Construction
Custom configurations available
This product can be manufactured in alternative materials, sizes, and mounting options to meet your project requirements. Contact us to discuss specifications.
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Additional Notes
The 51CRVS-SS/51CRHS-SS is UL/ULC certified for use as a 1-1/2 hour static fire damper in HVAC systems.
The 51CRVS-SS/51CRHS-SS is the stainless steel variant of the Type CR static fire damper, designed for installation in fire-rated assemblies using round ductwork where corrosion resistance is required, such as commercial kitchens, laboratories, coastal facilities, and other high humidity or chemically aggressive environments. The Type CR configuration accommodates round duct geometry while keeping the blades outside of the airflow path during normal operation. The interlocking curtain blade closes under spring tension when the fusible link releases, providing a compliant passive fire barrier at round duct penetrations.
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