Southwark Metal 35_6IN Trunk Duct Reducer 6 Inches

Product Description

The SOUTHWARK METAL 35_6IN is a sheet metal trunk duct reducer designed to transition airflow between duct sections of differing sizes in forced-air HVAC systems. Fabricated from hot dip galvanized steel, it delivers durable corrosion resistance suited for both supply and return trunk duct applications. This reducer maintains structural integrity under typical system static pressures and is built to meet ACCA and SMACNA standards. HVAC installers and sheet metal contractors use this fitting during new construction and retrofit projects where duct sizing changes along the trunk line.

This reducer is used in residential and light commercial forced-air duct systems where a trunk duct transitions to a smaller cross-section. It is installed inline along sheet metal trunk ducts to manage airflow distribution and maintain system efficiency. The 6-inch size fits standard trunk duct configurations commonly found in central air and gas furnace systems. Sheet metal technicians and HVAC mechanics are the primary installers of this fitting.

Key Features

• Hot dip galvanized steel construction provides corrosion resistance for long-term duct system service
• 6-inch size fits standard sheet metal trunk duct configurations
• Manufactured to ACCA and SMACNA applicable standards for duct fabrication
• Designed for inline trunk duct installation during new construction or retrofit work

Compatibility

Designed as an OEM-style replacement and new-installation fitting for sheet metal trunk duct systems requiring a 6-inch reducer transition.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified sheet metal contractors. Power down the air handling unit and close the system dampers before cutting into or modifying an existing trunk duct. Secure the reducer with sheet metal screws and seal all joints with UL 181-listed duct sealant or mastic to prevent air leakage. Follow SMACNA duct construction standards and local mechanical codes for proper fitment and fastening requirements.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Size: 6 inches
• Item Type: Reducer
• Used On: Sheet Metal Trunk Duct
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 35_6IN