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The Hart Cooley 27484 is a metal duct fitting designed for use in forced-air HVAC systems. This fitting carries the model designation HC F206 and is built to connect or transition ductwork runs in residential and light commercial installations. Hart Cooley is a well-known name in the HVAC supply industry, manufacturing grilles, registers, diffusers, and duct components trusted by heating and cooling professionals across North America. The 27484 measures 6 inches by 5 inches, making it a compact and practical fitting for tight mechanical spaces or standard trunk-and-branch duct layouts. Metal duct fittings like this one are used to join sections of rectangular or round ductwork, redirect airflow, or adapt between different duct sizes. They are fabricated from galvanized steel or similar sheet metal, which resists corrosion and holds up well under the temperature swings and airflow pressures common in HVAC applications. HVAC technicians and sheet metal workers rely on quality duct fittings to maintain efficient airflow, reduce leakage, and meet building code requirements. Proper duct connections minimize static pressure loss and help the system deliver conditioned air where it is needed. The Hart Cooley 27484 fits into standard duct assembly workflows and can be sealed with mastic or metal tape to meet energy code standards. Whether you are roughing in a new system, replacing a damaged fitting, or completing a retrofit, this metal duct fitting provides a reliable, code-compatible solution. It is suited for forced-air heating, central air conditioning, and ventilation systems in residential and light commercial buildings.
The Hart Cooley 27484 is a 6 inches by 5 inches metal duct fitting built for reliable performance in forced-air HVAC installations. It supports efficient airflow connections in residential and light commercial ductwork systems.
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