Southwark Metal 20_26X12 Duct Collar Takeoff 26x12 in

Product Description

The SOUTHWARK METAL 20_26X12 is a straight starting collar designed for sheet metal trunk duct systems in residential and light commercial HVAC installations. Fabricated from hot dip galvanized steel, this collar provides a durable, corrosion-resistant connection point where branch ducts or fittings originate from a main trunk line. Measuring 26 inches by 12 inches, it is sized for medium-to-large trunk duct runs and is built to meet ACCA and SMACNA standards for sheet metal ductwork fabrication and performance.

This starting collar is used at the beginning of a trunk duct run, typically installed directly off an air handler, furnace plenum, or main supply trunk. It is suited for forced-air systems in residential new construction, renovation, and light commercial applications. HVAC sheet metal mechanics and duct installers use this fitting to establish a clean, square takeoff point from the trunk, ensuring proper airflow distribution at the start of the duct system.

Key Features

• Hot dip galvanized steel construction resists corrosion in both conditioned and unconditioned spaces
• Straight body pattern provides a clean, direct starting connection on trunk duct systems
• 26 inch by 12 inch size accommodates medium-to-large supply trunk runs
• Meets ACCA and SMACNA applicable standards for sheet metal ductwork
• Starting collar type establishes the origin point of a trunk duct run

Compatibility

Designed as an OEM-style sheet metal fitting for use in forced-air HVAC trunk duct systems built to ACCA and SMACNA specifications, fitting trunk openings of 26 inches by 12 inches.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal mechanic. Power down the air handler or furnace and ensure the system is de-energized before beginning any duct modification work. Secure the collar to the trunk duct using drive cleats, S-cleats, or sheet metal screws per SMACNA installation guidelines, and seal all joints with listed duct sealant or mastic to meet local mechanical code requirements.

Technical Specifications

• Size: 26 inches x 12 inches
• Material: Hot Dip Galvanized Steel
• Body Pattern: Straight
• Type: Starting
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 20_26X12