Southwark Metal ATTRP_4IN Duct Saddle Takeoff 4 Inch

Product Description

The SOUTHWARK METAL ATTRP_4IN is a 4-inch round sheet metal duct saddle takeoff designed for branch connections in forced-air HVAC distribution systems. Constructed from hot-dip galvanized steel, this Air-Tite saddle fitting provides a secure, sealed branch tap off rectangular or round trunk ductwork. The saddle-style design seats firmly against the main duct and is field-cut to fit, allowing HVAC technicians to create clean, low-leakage branch runs during installation or retrofit work. It meets applicable ACCA and SMACNA standards for sheet metal duct construction.

This fitting is used in residential and light commercial forced-air systems where a branch takeoff is needed from a main supply trunk. Typical installations include adding a new supply run to an existing trunk line, extending duct systems during a renovation, or replacing a damaged fitting in an existing layout. The 4-inch round outlet suits standard 4-inch round flex or rigid branch ducts commonly used for individual room supply drops.

Key Features

• Hot-dip galvanized steel construction resists corrosion in attic, crawlspace, and basement environments
• Air-Tite saddle design minimizes air leakage at the branch connection point
• 4-inch round outlet connects to standard 4-inch round flex or rigid branch duct
• Meets ACCA and SMACNA fabrication and installation standards
• Saddle-style mounting allows field installation on existing trunk ductwork without full duct disassembly

Compatibility

Designed as an OEM-style replacement or new-installation fitting for residential and light commercial sheet metal duct systems requiring a 4-inch round saddle branch takeoff.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal contractor. Shut down the air handling unit and confirm the system is de-energized before cutting into existing ductwork. Field-cut the trunk duct opening to match the saddle outlet size and secure the fitting using sheet metal screws and UL 181-rated mastic or foil tape in accordance with SMACNA guidelines. All duct joints and seams should be sealed to minimize system air leakage.

Technical Specifications

• Material: Hot-Dip Galvanized Steel
• Outlet Diameter: 4 inches
• Type: Air-Tite Saddle Round Takeoff
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: ATTRP_4IN