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The HART COOLEY 5fsp is a round fire stop support with bracket designed for 5-inch B-vent gas appliance venting systems. It provides structural support to the vent pipe at floor or ceiling penetrations while maintaining the required clearances from combustible construction materials. This component is a standard part of compliant B-vent installations in residential and light commercial settings. Licensed HVAC technicians and plumbers install this fitting as part of a complete venting assembly to meet building and mechanical code requirements. Weighing 0.87 pounds, it is lightweight and straightforward to position during rough-in or retrofit work.
The 5fsp is used where a 5-inch Type B double-wall gas vent passes through a floor or ceiling assembly. It anchors the vent at the penetration point and helps prevent lateral movement while keeping the vent centered within the framed opening. Typical applications include residential gas furnaces, water heaters, and boilers vented vertically through living space floors or attic decking. The bracket provides a secure fastening point to the structural framing surrounding the penetration.
Designed as an OEM-style replacement and new-installation component for 5-inch Type B double-wall round gas vent systems in residential and light commercial applications.
Installation should be performed by a licensed HVAC technician or plumber in accordance with the appliance manufacturer instructions, NFPA 54 (National Fuel Gas Code), and applicable local mechanical codes. Shut off the gas supply and allow the appliance to cool completely before servicing or modifying any venting components. The fire stop support must be secured to solid framing at each floor or ceiling penetration and must not compress or restrict the vent pipe. Do not use this fitting as a substitute for a listed firestop or firestop spacer where one is required by code.
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