Atco Rubber Products 14866 Wye Fitting 4x3x3 Galvanized

Product Description

The ATCO RUBBER PRODUCTS 14866 is a galvanized sheet metal wye fitting used in low-pressure HVAC duct distribution systems. This wye configuration allows a single trunk duct to branch into two outlet legs, directing conditioned airflow from a main supply or return run to secondary branches. The 4-inch main inlet connects to 3-inch and 3-inch branch outlets, making it a practical solution for residential and light commercial duct systems where a balanced split is needed at the distribution point. HVAC installers and sheet metal contractors select this fitting when laying out supply-air trunk-and-branch configurations.

This wye fitting is suited for residential forced-air heating and cooling systems as well as light commercial applications using low-pressure ductwork. The galvanized finish provides corrosion resistance in both conditioned and unconditioned spaces such as attics, crawlspaces, and mechanical rooms. It connects to standard round galvanized duct and is a common component in new construction rough-in work and duct replacement or modification projects.

Key Features

• 4-inch main inlet branches to two 3-inch outlets for balanced airflow distribution
• Galvanized sheet metal construction for corrosion resistance in typical HVAC environments
• Wye geometry reduces turbulence compared to sharp-angle tee configurations
• Compatible with standard round galvanized duct and sheet metal fittings
• Suitable for low-pressure supply and return duct applications

Compatibility

Designed as an OEM-style galvanized wye fitting for use with standard round low-pressure HVAC ductwork in residential and light commercial forced-air systems.

Installation Notes

This fitting is installed by licensed HVAC technicians or sheet metal contractors. Power down the air handling unit and ensure the system is depressurized before cutting into existing ductwork. Secure all connections with sheet metal screws and seal joints with UL 181-rated foil tape or mastic sealant in accordance with applicable mechanical codes. Do not use this fitting in high-pressure or commercial VAV applications unless the system design specifically calls for it.

Technical Specifications

• Main Inlet Diameter: 4 inches
• Branch Outlet Diameters: 3 inches x 3 inches
• Configuration: Wye
• Material: Galvanized Sheet Metal
• Overall Length: 40.88 inches

Standard Information

• Brand: ATCO RUBBER PRODUCTS
• Manufacturer Part Number: 14866