Southwark Metal 90-28GA_12IN Round Duct Elbow 90 Degree 12 in

Product Description

The SOUTHWARK METAL 90-28GA_12IN is a round sheet metal duct elbow engineered for 90-degree directional changes in low-pressure HVAC ductwork systems. Fabricated from hot-dip galvanized steel at 28 gauge, this fitting delivers durable corrosion resistance suited to both supply and return air applications. With a 12-inch diameter on both the inlet and outlet, it handles large-diameter trunk or branch runs without reducing airflow capacity. HVAC sheet metal contractors and mechanical installers are the primary trades who work with this fitting during new construction and retrofit duct system installations.

This elbow is used in residential and light commercial forced-air systems where round duct transitions or direction changes are required. The 90-degree angle makes it appropriate for tight routing situations at walls, ceilings, or floor penetrations. It is sized identically on both ends at 12 inches, making it a symmetrical fitting that simplifies layout. Applications include supply trunk transitions, return air plenums, and mechanical room duct routing where a full right-angle turn is needed without a reduction in duct diameter.

Key Features

• 90-degree round duct elbow for full right-angle direction changes in HVAC systems
• Hot-dip galvanized steel construction provides corrosion resistance for long service life
• 28 gauge material thickness meets SMACNA and ACCA fabrication standards
• Symmetrical 12-inch diameter inlet and outlet eliminates the need for additional reducers
• Round profile integrates with standard spiral, snap-lock, and slip-joint round duct systems

Compatibility

Designed as an OEM-style round duct fitting compatible with standard 12-inch diameter round duct and fittings manufactured to SMACNA and ACCA duct construction standards.

Installation Notes

Installation should be performed by a licensed HVAC technician or sheet metal contractor in accordance with SMACNA duct construction standards and local mechanical codes. Secure the elbow to adjoining duct sections using drive cleats, S-cleats, or sheet metal screws, then seal all joints with UL 181-rated mastic or foil tape to maintain system pressure integrity. Power down the air handling unit and verify the system is depressurized before cutting into or modifying existing ductwork. Support the fitting per local mechanical code requirements to prevent sagging or joint separation over time.

Technical Specifications

• Type: Round Duct Elbow
• Angle: 90 Degree
• Size A (Inlet Diameter): 12 inches
• Size B (Outlet Diameter): 12 inches
• Material Thickness: 28 Gauge
• Material: Hot Dip Galvanized Steel
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 90-28GA_12IN