Southwark Metal 58_12X9 Round Duct Reducer 12 to 9 Inch

Product Description

The SOUTHWARK METAL 58_12X9 is a 3-piece round sheet metal duct reducer designed to transition airflow from a 12-inch diameter duct to a 9-inch diameter duct. Fabricated from hot dipped galvanized steel, this reducer delivers corrosion resistance suitable for residential and light commercial forced-air HVAC systems. The 3-piece construction allows for field adjustment and easier installation in tight spaces. HVAC technicians and sheet metal contractors install this fitting as part of supply or return trunk-line reductions where duct sizing must step down to match branch runs or terminal equipment.

This reducer is used in ducted forced-air heating and cooling systems where airflow must be transitioned between trunk and branch duct segments. Typical applications include supply-side trunk reductions in residential furnace and air handler installations, as well as light commercial air distribution systems requiring a concentric round-to-round step-down fitting. The fitting conforms to ACCA and SMACNA standards, making it appropriate for systems designed and installed to current industry guidelines.

Key Features

• Transitions from 12-inch diameter to 9-inch diameter round duct
• Hot dipped galvanized steel construction for corrosion resistance
• 3-piece design allows for field adjustment during installation
• Meets ACCA and SMACNA applicable standards
• Round profile fits standard round duct and fittings

Compatibility

Designed as an OEM-style replacement and standard fitting for round sheet metal duct systems with a 12-inch large-end connection and a 9-inch small-end connection, conforming to ACCA and SMACNA standards.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor following SMACNA duct construction standards. Power down the air handling unit and verify the system is de-energized before beginning duct work. Secure the reducer to adjoining duct sections using sheet metal screws and seal all joints with UL 181-listed duct sealant or approved tape per local mechanical code requirements. No crimp is supplied with this fitting, so verify end-connection method before installation.

Technical Specifications

• Material: Hot Dipped Galvanized Steel
• Type: 3-Piece, Round
• Larger End Size: 12 inches diameter
• Smaller End Size: 9 inches diameter
• Crimp Supplied: No
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 58_12X9