Southwark Metal 23_14X8 Trunk Duct Collar 14x8 Offset

Product Description

The SOUTHWARK METAL 23_14X8 is a sheet metal trunk duct collar takeoff designed for connecting branch ducts to main trunk lines in forced-air HVAC distribution systems. Constructed from hot dip galvanized steel, this offset starting collar provides a corrosion-resistant transition point at the beginning of a duct run. The offset body pattern allows installation in tight plenum or trunk configurations where a straight collar would not fit. HVAC installers and sheet metal contractors use this fitting to establish secure, airtight connections between the supply trunk and branch takeoffs in both new construction and retrofit applications.

This collar is suited for residential and light commercial HVAC ductwork installations where a starting collar is needed at the trunk line. The offset design accommodates spatial constraints common in attic, basement, and crawlspace installations. Its 14 inch by 8 inch sizing fits standard rectangular trunk duct dimensions used in residential forced-air systems. Sheet metal contractors and HVAC technicians typically specify this type of fitting during duct system layout in accordance with ACCA Manual D and SMACNA duct construction standards.

Key Features

• Hot dip galvanized steel construction for corrosion resistance in humid or exposed duct environments
• Offset body pattern accommodates tight plenum and trunk clearance conditions
• Starting collar type for use at the origination point of a branch takeoff run
• 14 inch by 8 inch sizing matches standard rectangular trunk duct dimensions
• Meets ACCA and SMACNA applicable standards for duct fabrication and installation

Compatibility

Designed as an OEM-style replacement and new-installation fitting for standard 14 inch by 8 inch rectangular trunk duct systems in residential and light commercial forced-air HVAC applications.

Installation Notes

Installation is typically performed by licensed HVAC technicians or sheet metal contractors. Shut down the air handling unit and de-energize all associated electrical controls before cutting into an existing trunk line. Secure the collar using sheet metal screws and seal all joints with UL 181-rated duct sealant or approved foil tape per SMACNA guidelines. Do not operate the system with unsealed joints, as air leakage reduces system efficiency and can affect equipment performance.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Size: 14 inches x 8 inches
• Body Pattern: Offset
• Type: Starting
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 23_14X8