52BVS Thinline Type B Static Fire Damper
The Alumavent 52BVS is a Thinline 1-1/2 hour label static fire damper, UL/ULC approved for use in HVAC systems where fans automatically shut down in the event of a fire alarm. The reduced 2-1/8" depth makes it ideal for installation in narrow partitions or behind grilles where standard depth dampers cannot be accommodated. The Type B blade configuration positions the blades above the direct airflow path, and the interlocking curtain type blade design 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 52BVS is UL/ULC certified for use as a 1-1/2 hour static fire damper in HVAC systems.
The 52BVS Thinline is designed for installation in fire-rated assemblies where partition depth is limited, such as narrow stud walls, masonry partitions, or installations behind architectural grilles. At 2-1/8" deep, it offers a significantly shallower profile than the standard 51-series dampers while maintaining the same 1-1/2 hour fire rating. The Type B configuration positions the blades above the direct airflow path, making it suitable for applications where the duct transitions into the fire separation at a different elevation. The interlocking curtain blade closes under spring tension when the fusible link releases.
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