The AVS811KT-1 8/11" Attic Firestop Vent Sleeve Assembly is a critical safety component for HVAC/R systems that require vent pipes to pass through fire-rated floor or ceiling assemblies. This assembly helps to maintain the fire rating of the structure, preventing the spread of fire and smoke between building compartments, which is paramount for occupant safety and code compliance.
Building contractors and HVAC installers prioritize fire safety and regulatory adherence, making this vent sleeve assembly an essential purchase for new constructions or renovations. It addresses the need for a reliable, pre-engineered solution to safely penetrate structural barriers while accommodating the 8/11" vent pipe dimension.
When specifying this assembly, it is vital to ensure the 8/11" dimension is compatible with your vent pipe system and that the product meets local fire codes for the specific application (e.g., attic, floor penetration). Proper installation of a firestop assembly is non-negotiable for ensuring the overall safety and integrity of the building's fire protection system.









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