Lukjan rx77040603 Adjustable Flue Wye 6x4x3

Product Description

The LUKJAN rx77040603 is an adjustable flue wye fitting designed for venting system installations where three duct runs must be joined or branched. The 6 x 4 x 3 inch configuration allows a technician to connect a main 6-inch flue run to a 4-inch and a 3-inch branch in a single fitting. The adjustable design accommodates slight angular variation, making field installation more forgiving in tight spaces or when duct runs are not perfectly aligned. HVAC installers and sheet metal mechanics use this type of fitting during new construction and system modification work.

This fitting is suited for residential and light commercial venting applications where B-vent or single-wall flue duct systems require a wye-style branch connection. It is commonly installed in attic, basement, and utility room venting runs where a main trunk splits to serve multiple appliances or zones. The 6-inch inlet combined with the 4-inch and 3-inch outlets makes it appropriate for multi-appliance venting configurations.

Key Features

• Adjustable angle design for flexible field positioning during install
• Three-port wye configuration: 6 inch main, 4 inch and 3 inch branches
• Sized for standard flue duct connections in residential and light commercial venting
• Designed for tee and wye section applications in venting assemblies

Compatibility

Designed as an OEM-style replacement or new-install fitting for standard 6 x 4 x 3 inch flue duct wye applications in residential and light commercial venting systems.

Installation Notes

Installation should be performed by a licensed HVAC technician or sheet metal mechanic familiar with venting codes such as the International Fuel Gas Code. Shut down and isolate any connected appliances before opening or modifying a flue venting system. Secure all connections with appropriate fasteners and seal per local code requirements. Inspect adjoining duct sections for damage or misalignment before completing the final assembly.

Technical Specifications

• Main Inlet Size: 6 inches
• Branch Outlet 1 Size: 4 inches
• Branch Outlet 2 Size: 3 inches
• Fitting Type: Adjustable Flue Wye
• Section Category: Tees and Wyes

Standard Information

• Brand: LUKJAN
• Manufacturer Part Number: rx77040603