Southwark Metal WS21_3-1/4X14 Wall Stack End Cap

Product Description

The SOUTHWARK METAL WS21_3-1/4X14 is a hot dip galvanized steel wall stack end cap designed to terminate 3-1/4 inch by 14 inch rectangular sheet metal duct runs at a wall surface. It provides a clean, sealed closure at the open end of a wall stack duct, preventing airflow bypass and blocking debris entry into the duct cavity. The galvanized steel construction resists corrosion in both conditioned and unconditioned spaces. This end cap is a standard component in residential forced-air distribution systems and is installed by licensed HVAC technicians and sheet metal contractors.

Wall stack end caps are used where a rectangular supply or return duct terminates at a wall register opening or at a dead-end section of a wall-run duct system. The 3-1/4 inch by 14 inch profile is one of the most common wall stack sizes in residential HVAC construction, fitting standard framed wall cavities. Typical applications include new construction duct installation, duct system modifications, and replacement of damaged or missing end caps on existing wall stack assemblies.

Key Features

• Hot dip galvanized steel construction for corrosion resistance in occupied and unconditioned spaces
• Fits standard 3-1/4 inch by 14 inch wall stack duct openings
• Provides a sealed termination to prevent uncontrolled airflow and debris ingress
• Manufactured to ACCA and SMACNA applicable standards
• Drop-in replacement for damaged or missing wall stack end caps in existing duct systems

Compatibility

Designed for use with standard 3-1/4 inch by 14 inch rectangular wall stack sheet metal duct systems in residential forced-air HVAC applications, in accordance with ACCA and SMACNA guidelines.

Installation Notes

Installation is performed by licensed HVAC technicians or sheet metal contractors. Shut down the air handling unit and verify the system is de-energized before working on duct terminations. Secure the end cap with appropriate sheet metal fasteners or approved duct sealant per SMACNA installation standards. Seal all joints with mastic or listed duct tape to maintain system integrity and comply with local mechanical codes.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Size: 3-1/4 inches x 14 inches
• Type: Wall Stack End Cap
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: WS21_3-1/4X14