Southwark Metal 63A_4IN Square to Round Duct Takeoff 4 in

Product Description

The SOUTHWARK METAL 63A_4IN is an adjustable square to round duct takeoff fitting designed for sheet metal ductwork systems. Constructed from hot dip galvanized steel, this takeoff connects a rectangular or square trunk duct to a 4-inch round branch run. The adjustable design allows the collar angle to be set during installation, making it suitable for a range of duct configurations without requiring custom fabrication. HVAC sheet metal mechanics and duct installers use this fitting in both new construction and retrofit applications where branch supply runs need to be tapped off a main duct.

This takeoff is intended for residential and light commercial forced-air HVAC systems where a 4-inch round branch duct is required. It is installed on the main trunk duct at the point of a supply branch takeoff. The adjustable feature accommodates varying installation angles, reducing the need for additional transition fittings. It is well suited for low-pressure supply air distribution systems built to ACCA and SMACNA standards.

Key Features

• 4-inch diameter outlet for connection to 4-inch round branch ductwork
• Hot dip galvanized steel construction for corrosion resistance in air distribution applications
• Adjustable collar allows field-set installation angle without custom fabrication
• Manufactured to ACCA and SMACNA applicable standards
• Compatible with standard sheet metal trunk duct construction

Compatibility

Designed as an OEM-style replacement and new-construction fitting for residential and light commercial forced-air duct systems requiring a 4-inch square to round takeoff connection.

Installation Notes

Installation is performed by licensed sheet metal mechanics or HVAC technicians. The air handling system should be shut down and the main disconnect de-energized before cutting into any existing ductwork. Duct openings should be cut to the fitting collar dimensions and secured with sheet metal screws and foil-backed mastic or UL-listed duct tape per SMACNA installation guidelines. Follow local mechanical codes and ACCA Manual D duct design requirements for branch sizing and takeoff placement.

Technical Specifications

• Outlet Diameter: 4 inches
• Material: Hot Dip Galvanized Steel
• Type: Adjustable Square to Round Takeoff
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 63A_4IN