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The HART COOLEY 10r24 is a double-wall Type B gas vent round pipe designed for Category 1 appliance venting applications. It measures 10 inches in diameter and 2 feet in length, constructed with an aluminum inner wall and a galvanized steel outer wall. This double-wall design creates an insulating air gap between the two walls, helping maintain flue gas temperature and reducing the risk of condensation inside the vent. Licensed HVAC technicians and gas appliance installers use this pipe to build or extend vertical vent systems on natural gas and propane appliances. It is a standard component in residential and light commercial venting assemblies.
This pipe section is suited for Category 1 venting applications, which include non-positive vent pressure systems operating with flue gases above the dew point. Typical installations connect water heaters, furnaces, boilers, and other Category 1-rated gas appliances to a masonry or metal chimney using a continuous Type B vent run. The 10-inch diameter accommodates higher-capacity appliances that require larger vent sizing per manufacturer specifications and applicable gas codes.
Designed for use in Type B double-wall gas vent systems for Category 1 appliances. Compatible with Type B vent fittings, elbows, tees, and termination caps of the same 10-inch diameter rating.
Installation must be performed by a qualified HVAC technician or gas appliance installer in accordance with NFPA 54, local gas codes, and the appliance manufacturer's venting instructions. Shut off gas supply and allow the appliance to cool completely before servicing or extending the vent system. Maintain required clearances to combustibles as specified for Type B vent per the International Fuel Gas Code. Do not mix Type B vent components from different manufacturers within the same vent system unless the system is listed and approved for mixed-brand use.
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