Southwark Metal 73C122014 Rectangular to Round Transition 12 Inches X 20 Inches X 14 Inches

Product Description

The Southwark Metal 73C122014 is a rectangular to round transition fitting designed for HVAC duct systems where airflow must move from a rectangular duct opening to a round collar. This type of fitting is a core component in forced-air heating and cooling systems, allowing installers to connect rectangular plenums, air handlers, or trunk lines to round branch ducts or flexible ductwork. The 73C122014 fits a rectangular duct opening of 12 inches by 20 inches and transitions to a 14-inch diameter round collar, making it well suited for medium to large commercial and residential HVAC installations. The collar height on fittings of this diameter is approximately 3 inches, giving enough surface area for a secure connection to round duct or flex. Fabricated from hot dipped galvanized steel per ASTM A653 CS Type B, this transition is built to resist corrosion and hold up to the demands of long-term duct system operation. The 28-gauge steel construction provides a balance of rigidity and workability, allowing HVAC technicians and sheet metal workers to handle and install the fitting efficiently. Galvanized duct fittings like this one are standard in commercial HVAC builds, residential new construction, and system replacement or retrofit projects. The 73C122014 is part of the Southwark Metal 73C product family, which covers a broad range of rectangular-to-round transition sizes from 6 inches by 6 inches through 20 inches by 20 inches. Manufactured in the USA, this fitting meets quality expectations for professional trade use. HVAC contractors, mechanical installers, and sheet metal fabricators rely on fittings like this for efficient, leak-resistant duct connections in both supply and return air applications. Sold individually as a single unit.

• Rectangular to round transition fitting: 12 inches by 20 inches rectangular opening to 14-inch round collar
• Hot dipped galvanized steel per ASTM A653 CS Type B, 28 gauge for corrosion resistance and durability
• Made in the USA, part of the Southwark 73C product family covering a wide range of duct transition sizes

Product Highlights

The Southwark Metal 73C122014 delivers a reliable, corrosion-resistant connection between rectangular and round ductwork in residential and commercial HVAC systems. Its 28-gauge galvanized steel construction and ASTM A653 compliance make it a dependable choice for professional mechanical installations.

Product Information

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 73C122014

Technical Specifications

• Material: Galvanized Steel
• Gauge: 28 GA
• Duct Size: 12 inches x 20 inches
• Diameter: 14 inches
• Height: 12 inches
• Width: 20 inches
• Weight: 3.208 pounds
• Galvanized: Yes
• Country of Origin: USA
• Prop 65: Yes
• Unit of Measure: Each