Southwark Metal 58_9X8 Sheet Metal Pipe Reducer 9x8 in

Product Description

The SOUTHWARK METAL 58_9X8 is a 3-piece sheet metal pipe reducer used to transition round ductwork from a 9-inch diameter to an 8-inch diameter. Fabricated from hot dip galvanized steel, it resists corrosion in both supply and return air applications. The no-crimp design means the installer supplies or selects their own crimping method at connection points, allowing flexibility in how the fitting integrates with adjacent duct sections. This reducer is a standard component in low-pressure residential and light commercial HVAC duct systems and is installed by licensed HVAC technicians and sheet metal workers.

This fitting is suited for round duct trunk-to-branch transitions where airflow must step down from a 9-inch main to an 8-inch branch or sub-main. It is applicable in forced-air heating and cooling systems and meets ACCA and SMACNA standards, making it appropriate for systems designed and installed to those specifications. Its galvanized construction holds up in unconditioned spaces such as attics, crawlspaces, and mechanical rooms where condensation and humidity are factors.

Key Features

• Transitions round duct from 9 inches (larger end) to 8 inches (smaller end)
• Hot dip galvanized steel construction for corrosion resistance
• 3-piece fabrication for consistent fit and dimensional accuracy
• No crimp included — installer-supplied connection method at both ends
• Meets ACCA and SMACNA applicable standards

Compatibility

Designed as an OEM-style replacement or new-construction fitting for residential and light commercial round duct systems requiring a 9-inch to 8-inch diameter reduction.

Installation Notes

Installation should be performed by a qualified HVAC technician or licensed sheet metal worker in accordance with SMACNA duct construction standards and local mechanical codes. Shut down the air handling system before cutting into existing ductwork or removing sections. Secure all joints with sheet metal screws and seal with UL 181-listed duct tape or mastic sealant as required by code. Do not force the fitting onto duct ends that fall outside standard round duct tolerances, as this can compromise the joint seal.

Technical Specifications

• Larger End Diameter: 9 inches
• Smaller End Diameter: 8 inches
• Material: Hot Dip Galvanized Steel
• Type: 3-Piece
• Crimp Supplied: No
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 58_9X8