Southwark Metal 73C142014 Rectangular to Round Transition 14 Inches X 20 Inches X 18 Inches Diameter

Product Description

The Southwark Metal 73C142014 is a rectangular to round duct transition fitting designed for HVAC duct systems where a rectangular duct opening must connect to a round collar or round duct section. This type of transition is a standard component in forced-air heating and cooling systems, used by HVAC installers, sheet metal contractors, and mechanical contractors working on residential and light commercial projects. The fitting accepts a 14 inch by 20 inch rectangular duct opening and transitions down to an 18 inch round collar, making it suitable for connecting rectangular trunk lines to round branch ducts or to round boots and registers. The collar height on fittings with an 18 inch diameter is approximately 3 inches, providing enough depth for a secure mechanical connection using sheet metal screws and duct tape or mastic sealant. This fitting is manufactured from 28 gauge hot dipped galvanized steel meeting ASTM A653 CS Type B standards. The galvanized coating resists corrosion and extends service life in both conditioned and unconditioned spaces such as attics, crawlspaces, and mechanical rooms. The 28 gauge construction offers a balance of rigidity and workability, allowing field trimming and adjustment when needed. Southwark Metal is a well-established name in the sheet metal fabrication industry, and the 73C product family covers a wide range of rectangular to round transitions to fit common duct system configurations. This fitting ships as a single unit and is made in the USA. It is a practical, code-compatible component for new construction and retrofit duct work applications.

• Transitions a 14 inch by 20 inch rectangular duct opening to an 18 inch round collar for flexible duct system layout
• Fabricated from 28 gauge hot dipped galvanized steel per ASTM A653 CS Type B for corrosion resistance and long service life
• Collar height is approximately 3 inches on 18 inch diameter fittings, providing a secure connection point for round duct or flex duct

Product Highlights

The Southwark Metal 73C142014 rectangular to round transition delivers reliable, corrosion-resistant performance in standard HVAC duct systems. Its 28 gauge galvanized steel construction and USA manufacturing make it a dependable choice for professional sheet metal and HVAC contractors.

Product Information

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 73C142014

Technical Specifications

• Material: Galvanized Steel
• Gauge: 28 GA
• Rectangular Duct Size: 14 inches x 20 inches
• Round Collar Diameter: 18 inches
• Collar Height: Approximately 3 inches
• Galvanized Coating: Yes, ASTM A653 CS Type B Hot Dipped
• Height: 12 inches
• Length: 14 inches
• Width: 20 inches
• Weight: 3.974 pounds
• Country of Origin: USA
• Unit of Measure: Each
• Prop 65: Yes