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The DUC-PAC 97540 is a 26-gauge round smoke pipe section measuring 6 inches in diameter by 24 inches in length. It is used in single-wall venting systems that connect gas-fired or oil-fired appliances to chimneys or vent connectors. The 26-gauge steel construction provides the structural rigidity needed for field cutting, joining, and securing in tight mechanical room installations. HVAC technicians and plumbers install this pipe as part of a Type B or single-wall vent connector assembly in residential and light commercial applications.
This smoke pipe section is suited for residential furnace, boiler, and water heater venting where a 6-inch diameter connector is required. It is commonly used in mechanical rooms and utility spaces where appliance flue outlets must be routed horizontally or at a slight incline to a vertical chimney or masonry flue. The 24-inch length reduces the number of joints needed in shorter runs, simplifying installation and limiting potential leak points in the vent assembly.
Designed as an OEM-style replacement and new-installation component for single-wall round smoke pipe venting systems requiring a 6-inch diameter connector section.
Installation should be performed by a licensed HVAC technician or plumber in accordance with NFPA 54, the International Fuel Gas Code (IFGC), and local mechanical codes. Shut off the appliance and allow all components to cool completely before servicing or replacing any vent connector sections. Secure all joints with a minimum of three sheet metal screws and ensure proper slope toward the appliance as required by code. Single-wall smoke pipe must maintain required clearances to combustibles as specified by the appliance manufacturer and applicable codes.
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