Southwark Metal 21_26X10 Trunk Duct End Cap 26x10

Product Description

The SOUTHWARK METAL 21_26X10 is a sheet metal trunk duct end cap designed to close off the open end of a rectangular trunk duct measuring 26 inches by 10 inches. Fabricated from hot dip galvanized steel, this end cap provides durable corrosion resistance in forced-air HVAC duct systems. It is used to terminate trunk lines cleanly and prevent air bypass at duct termination points. HVAC sheet metal installers and mechanical contractors work with this component during duct fabrication, system installation, and duct modification projects.

This end cap is suited for residential and light commercial forced-air systems where rectangular trunk duct distribution is used. It fits a standard 26 inch by 10 inch trunk duct opening and conforms to ACCA and SMACNA standards, making it appropriate for new construction, retrofit, and replacement applications in ducted HVAC systems. It is installed at the terminal end of a trunk run to cap the duct and maintain system static pressure.

Key Features

• Hot dip galvanized steel construction for corrosion resistance in HVAC duct environments
• Sized for 26 inch by 10 inch rectangular trunk duct openings
• Trunk-type end cap terminates duct runs and prevents unintended air bypass
• Meets ACCA and SMACNA applicable standards for sheet metal ductwork
• Compatible with standard rectangular sheet metal trunk duct systems

Compatibility

Designed as an OEM-style sheet metal fitting for rectangular trunk duct systems with a 26 inch by 10 inch opening, fabricated to ACCA and SMACNA standards.

Installation Notes

Installation is performed by licensed HVAC technicians or sheet metal mechanics. The air handling system should be powered down and the blower confirmed off before installing or modifying duct components. The end cap is typically secured using sheet metal screws and sealed with UL 181-listed duct tape or mastic sealant per SMACNA guidelines to prevent air leakage. Follow local mechanical codes for duct sealing and support requirements.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Duct Width: 26 inches
• Duct Height: 10 inches
• Type: Trunk
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 21_26X10