Southwark Metal 781066A Wye Branch 10x6x6 in

Product Description

The SOUTHWARK METAL 781066A is a sheet metal wye branch fitting used in forced-air HVAC duct systems. It splits a single trunk duct into two branch runs, allowing airflow to be distributed from a main duct to two separate zones or supply runs. The fitting measures 10 inches on the main inlet by 6 inches on each of the two branch outlets. HVAC installers and sheet metal workers use wye fittings like this one where a clean, low-turbulence split is needed rather than a hard tee takeoff.

This wye branch is suited for residential and light commercial forced-air systems where ductwork is fabricated or extended on-site. It is a standard trunk-to-branch transition used during new construction, system additions, or duct modification work. The balanced 6-inch outlet configuration makes it appropriate for supply duct layouts where two equal-sized branch runs need to be served from a single 10-inch main.

Key Features

• Wye branch geometry promotes lower airflow turbulence compared to sharp-angle tee fittings
• Main inlet: 10 inches; dual branch outlets: 6 inches each
• Sheet metal construction typical of Southwark Metal duct fittings
• Designed for integration into standard forced-air supply duct systems
• Symmetrical branch outlets simplify balanced airflow distribution

Compatibility

Designed as an OEM-style sheet metal wye fitting for use in standard residential and light commercial forced-air HVAC duct systems with a 10-inch main trunk and 6-inch branch runs.

Installation Notes

Installation should be performed by a licensed HVAC technician or journeyman sheet metal worker in accordance with SMACNA duct construction standards and applicable local mechanical codes. Power down the air handling unit before working on any duct section. Secure all joints with sheet metal screws and seal with UL 181-listed mastic or foil tape to maintain system pressure and efficiency. Do not exceed the duct system static pressure rating when integrating new branch runs.

Technical Specifications

• Main Inlet Size: 10 inches
• Branch Outlet Size: 6 inches (x2)
• Fitting Type: Wye Branch

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 781066A