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The IMPERIAL MFG GROUP USA INC GV0899 is a 26-gauge galvanized sheet metal tee fitting designed for full-flow HVAC duct distribution. All three openings measure 8 inches, making this a true equal-leg tee suited for trunk-to-branch transitions in forced-air systems. The 26-gauge galvanized steel construction provides corrosion resistance and structural rigidity in supply and return air applications. HVAC sheet metal mechanics and ductwork installers use this fitting in both new construction and retrofit duct systems. The package contains 5 fittings per unit of measure.
This tee fitting is used in residential and light commercial HVAC ductwork where an 8-inch main duct branches into two 8-inch runs at equal flow capacity. The full-flow design minimizes restriction at the branch point, supporting balanced air distribution across connected zones. It is appropriate for supply-side and return-side trunk installations in forced-air heating and cooling systems. Sheet metal contractors typically install this fitting as part of a galvanized duct assembly secured with drive cleats, S-cleats, or sheet metal screws.
Designed as an OEM-style sheet metal fitting for use in standard 8-inch galvanized HVAC duct systems assembled with conventional sheet metal fastening methods.
Installation should be performed by a qualified HVAC sheet metal mechanic in accordance with SMACNA duct construction standards and applicable local mechanical codes. Shut down the air handling system before modifying any duct section. Secure the tee to adjoining duct sections using drive cleats, S-cleats, or sheet metal screws and seal all seams with listed duct mastic or UL 181-rated tape per local code requirements. Do not use this fitting on grease ducts, exhaust systems, or any application outside its rated pressure class.
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