Southwark Metal ATD_9IN Duct Takeoff 9 Inch Round

Product Description

The SOUTHWARK METAL ATD_9IN is a 9-inch round Air-Tite sheet metal duct takeoff fabricated from hot-dipped galvanized steel. Takeoffs connect branch duct runs to main trunk ducts in forced-air distribution systems, allowing airflow to be directed to individual zones or rooms. This fitting measures 9 inches on both the A and B dimensions, making it a square-to-round or trunk-to-branch transition piece suited for standard residential and light commercial ductwork. Hot-dipped galvanization provides corrosion resistance in unconditioned spaces such as attics, crawlspaces, and mechanical rooms. The Air-Tite designation indicates a construction standard aimed at reducing air leakage at the fitting joint.

This takeoff is used in forced-air HVAC systems wherever a branch duct departs from a rectangular or round main trunk. Typical applications include new construction duct systems, duct replacement projects, and duct extension work in residential and light commercial settings. Sheet metal contractors and HVAC installers use fittings of this type when laying out supply or return air distribution systems designed to ACCA Manual D standards.

Key Features

• Hot-dipped galvanized steel construction for corrosion resistance in unconditioned spaces
• 9-inch diameter on both Size A and Size B dimensions for consistent branch sizing
• Air-Tite construction to minimize air leakage at duct connections
• Round fitting profile compatible with standard round branch duct runs
• Meets ACCA and SMACNA applicable standards for sheet metal ductwork

Compatibility

Designed as an OEM-style replacement and new-installation fitting for 9-inch round branch duct systems built to SMACNA and ACCA standards in residential and light commercial forced-air applications.

Installation Notes

Installation should be performed by a licensed sheet metal contractor or HVAC technician. The air handling system must be powered down and the unit shut off before cutting into existing ductwork or installing new trunk connections. Joints should be secured with sheet metal screws and sealed with UL 181-rated mastic or foil tape per SMACNA guidelines to maintain system pressure and Air-Tite performance. Follow local mechanical codes and ACCA Manual D requirements for proper duct sizing and fitting placement.

Technical Specifications

• Material: Hot-Dipped Galvanized Steel
• Size A Diameter: 9 inches
• Size B Diameter: 9 inches
• Type: Air-Tite, Round
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: ATD_9IN