Southwark Metal 162016A Rectangular to Round Transition 16 Inches X 20 Inches X 16 Inches

Product Description

The Southwark Metal 162016A is a rectangular to round transition fitting designed for HVAC duct systems. It connects a rectangular duct opening to a round collar, allowing airflow to move efficiently from one duct shape to another. HVAC installers, sheet metal contractors, and mechanical contractors use this type of transition fitting when transitioning from trunk lines or plenums to round branch ducts or flex duct connections. This is a standard component in residential and light commercial forced-air systems.

The 162016A measures 16 inches by 20 inches on the rectangular end and transitions to a 16-inch round collar. The overall height of the fitting is 12 inches, giving it a gradual taper that helps maintain smooth airflow and reduces turbulence inside the duct system. The collar height on fittings with a diameter of 16 inches and above is approximately 3 inches, providing enough surface area for a secure mechanical connection or for driving sheet metal screws when attaching to round pipe or flex duct.

This fitting is fabricated from 28-gauge hot-dipped galvanized steel meeting ASTM A653 CS Type B standards. The galvanized coating protects against corrosion and extends the service life of the fitting, even in humid or variable-temperature environments. Galvanized sheet metal transitions are a preferred choice for permanent duct installations where long-term durability matters. The fitting is manufactured in the USA and is sold individually.

Southwark Metal is a well-known supplier of sheet metal duct components. Their 73C product family covers a wide range of rectangular-to-round transitions in various sizes. This fitting supports a 16-inch by 20-inch duct size and a 16-inch round outlet, making it a commonly specified size for larger trunk-to-branch transitions in commercial and residential HVAC layouts.

• Rectangular to round transition fitting for HVAC duct systems, connecting a 16 inches x 20 inches rectangular opening to a 16-inch round collar
• Fabricated from 28-gauge hot-dipped galvanized steel per ASTM A653 CS Type B for durability and corrosion resistance
• Made in the USA and sold individually, compatible with standard round pipe and flex duct connections

Product Highlights

The Southwark Metal 162016A provides a reliable, code-quality rectangular-to-round transition for professional HVAC duct installations. Its galvanized steel construction and standard sizing make it a dependable choice for both new construction and replacement work.

Product Information

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 162016A

Technical Specifications

• Material: Galvanized Steel
• Gauge: 28 GA
• Duct Size: 16 inches x 20 inches
• Diameter: 16 inches
• Height: 12 inches
• Length: 16 inches
• Width: 20 inches
• Weight: 3.32 pounds
• Galvanized Coating: Yes
• Country of Origin: USA
• Prop 65: Yes
• Unit of Measure: Each
• Product Family: 73C