Southwark Metal 21_14X12 Trunk Duct End Cap 14x12

Product Description

The SOUTHWARK METAL 21_14X12 is a sheet metal trunk duct end cap designed to close off the terminal end of a rectangular trunk duct measuring 14 inches by 12 inches. Fabricated from hot dip galvanized steel, it provides corrosion resistance suited to the temperature and humidity conditions found inside forced-air duct systems. This fitting is installed by HVAC sheet metal mechanics and duct installers during new construction or retrofit work where an open duct terminus must be sealed to maintain system static pressure and prevent air bypass.

This end cap is used in residential and light commercial forced-air HVAC systems where rectangular trunk duct runs are terminated at a wall, floor, or mechanical room boundary. It fits 14-inch by 12-inch trunk duct openings and is appropriate for supply or return trunk applications. Installation typically follows SMACNA and ACCA duct construction standards, making it suitable for projects where those standards are specified by design or local code.

Key Features

• Hot dip galvanized steel construction for corrosion resistance in HVAC duct environments
• Sized for 14-inch by 12-inch rectangular trunk duct openings
• Trunk-type end cap profile for a flush, secure closure at duct terminations
• Meets ACCA and SMACNA applicable standards for duct fittings

Compatibility

Designed as an OEM-style sheet metal fitting for use with standard 14-inch by 12-inch rectangular trunk duct sections in forced-air HVAC systems built to SMACNA or ACCA duct construction guidelines.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified sheet metal mechanics. Power down the air handling unit and confirm the system is de-energized before working inside the duct system. The end cap is typically secured to the duct opening using sheet metal screws and sealed with UL 181-rated duct sealant or mastic to prevent air leakage. Follow SMACNA duct construction standards and applicable local mechanical codes for fastener spacing and sealing requirements.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Size: 14 inches x 12 inches
• Type: Trunk End Cap
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 21_14X12