Southwark Metal 78_10X8X8 Sheet Metal Wye Branch 10x8x8

Product Description

The SOUTHWARK METAL 78_10X8X8 is a hot-dip galvanized steel sheet metal pipe wye branch fitting designed for branching airflow within ducted HVAC distribution systems. It splits a 10-inch main duct into two 8-inch branch legs, allowing balanced air distribution across multiple zones or supply runs. Fabricated from hot-dip galvanized steel, this fitting resists corrosion and holds up in both conditioned and unconditioned spaces. HVAC sheet metal contractors and mechanical tradespeople install this fitting during new construction duct fabrication or duct modification projects. It meets applicable ACCA and SMACNA standards for sheet metal ductwork construction.

This wye branch is suited for residential and light commercial forced-air systems where a 10-inch trunk line must divide into dual 8-inch supply or return branches. Typical install scenarios include attic, basement, and crawlspace duct runs where branch takeoffs are required to distribute conditioned air to multiple areas. The wye configuration provides a lower-resistance airflow path compared to sharp tee branch fittings, supporting more efficient air delivery across the system.

Key Features

• Hot-dip galvanized steel construction for corrosion resistance in HVAC duct applications
• Wye branch configuration reduces turbulence and pressure drop compared to sharp tee fittings
• 10-inch main inlet with dual 8-inch branch outlets for trunk-to-branch transitions
• Meets ACCA and SMACNA applicable standards for sheet metal duct systems
• Suitable for residential and light commercial forced-air ductwork installations

Compatibility

Designed as an OEM-style sheet metal wye branch fitting for residential and light commercial forced-air duct systems using 10-inch main trunk and 8-inch branch round duct configurations.

Installation Notes

Installation should be performed by a licensed sheet metal or HVAC mechanical contractor in accordance with SMACNA duct construction standards and local mechanical codes. Power down the air handling unit and verify the system is depressurized before cutting into or modifying existing ductwork. Secure all connections with appropriate sheet metal screws and seal joints with listed duct sealant or foil tape per SMACNA guidelines. Do not rely on tape alone as the sole mechanical fastening method at the fitting joint.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Main Inlet Size: 10 inches
• Branch Outlet Size: 8 inches x 8 inches
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 78_10X8X8