The GV0845 7 in. x 3 in. round duct collar is a lightweight, reliable sheet metal fitting engineered to connect standard 7-inch round branch piping to a flat HVAC surface, such as a furnace plenum or main rectangular trunk line. Fabricated from 32-gauge galvanized steel, this collar provides a simple and efficient way to start a new round ventilation run in residential applications.
Ideal for sheet metal installers and HVAC technicians, this 3-inch deep collar features a straight design that makes sliding round flexible or rigid pipe over it straightforward. The 32-gauge metal offers an optimal balance of lightweight handling and proper alignment rigidity during tight-space installations. A high-quality galvanized finish protects the collar against moisture and rust, ensuring lasting stability in varied humidity conditions.
When updating or extending a forced-air layout, matching this 7-inch diameter to your branch lines ensures uninterrupted airflow and helps prevent static pressure loss. It can be easily fastened to flat surfaces using sheet metal screws or tabs and should be finished with industry-standard mastic or foil duct tape. Verify your layout configurations and connection dimensions to select this functional GV0845 round collar.
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