Southwark Metal 73C 14X16X16 Square to Round Transition Outlet

Product Description

The SOUTHWARK METAL 73C 14X16X16 is a square-to-round transition outlet used in low-pressure sheet metal ductwork systems. This fitting connects a rectangular duct opening to a round collar, allowing airflow to transition between duct shapes without turbulence loss. It is fabricated from sheet metal and sized at 14 x 16 x 16 inches, making it suited for trunk-to-branch transitions in residential and light commercial forced-air HVAC systems. HVAC sheet metal installers and ductwork fabricators are the primary users of this fitting. The unit weighs 3.974 pounds and is designed for use in supply or return air applications where a geometry change is required in the duct run.

This transition outlet is used in forced-air heating and cooling systems where rectangular plenum or trunk connections must reduce or change shape to feed round branch ducts. It is commonly installed at air handler outlets, plenum takeoffs, and main trunk transitions in both new construction and retrofit ductwork projects. The 14 x 16 x 16 inch configuration accommodates mid-range duct sizes typical of residential systems and smaller commercial applications. No specific compatible system models or OEM part numbers are stated in available product data.

Key Features

• Transitions a rectangular duct opening to a round collar for flexible duct routing
• Compact 20 x 14 x 12 inch footprint fits standard framing cavities and mechanical spaces
• Lightweight at 3.974 pounds for easy single-person handling and overhead installation
• Sheet metal construction suitable for low-pressure forced-air supply and return systems
• Standard fitting geometry compatible with common sheet metal fabrication and assembly practices

Compatibility

Designed as an OEM-style sheet metal fitting for use in low-pressure residential and light commercial forced-air duct systems requiring a square-to-round geometry transition.

Installation Notes

Installation is performed by licensed HVAC technicians or sheet metal workers in accordance with SMACNA duct construction standards and applicable local mechanical codes. Shut down the air handling system and verify zero airflow before cutting into or modifying existing ductwork. Seal all joints with UL-listed mastic or foil tape rated for HVAC duct applications. Do not use this fitting in high-pressure or industrial ventilation systems unless verified as suitable for those conditions.

Technical Specifications

• Length: 20 inches
• Width: 14 inches
• Height: 12 inches
• Weight: 3.974 pounds

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 73C 14X16X16