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The HART COOLEY 10rt is a double-wall round tee fitting designed for use in Type B gas vent systems. It connects branch venting runs to a main vertical vent stack, allowing combustion gases to exit safely from gas-fired appliances such as furnaces, boilers, and water heaters. The 10-inch diameter accommodates high-volume residential and light commercial venting applications. Licensed HVAC technicians and plumbers install this component as part of a complete B-vent assembly. At 5.48 pounds, the fitting is substantial enough for secure in-line support while remaining manageable for single-person installation in confined mechanical spaces.
This tee is suited for residential and light commercial applications where a Type B double-wall vent system serves natural gas or propane appliances with draft-hood-equipped burners. It is commonly installed in attic, basement, or utility-room vent runs where a branch line must tie into a vertical chase. The double-wall construction maintains flue-gas temperature to sustain proper draft and reduces exterior surface temperatures for safer installation near combustible materials.
Designed as an OEM-style component for Type B double-wall round gas vent systems in residential and light commercial installations with natural gas or propane appliances.
Installation must be performed by a qualified HVAC technician or licensed plumber in accordance with NFPA 54 and local mechanical codes governing Type B vent systems. Shut off and lock out the appliance before disassembling any section of the vent. Maintain required clearances to combustibles as specified by the vent manufacturer and the applicable building code. Inspect all joint connections for proper engagement before restoring appliance operation.
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