Southwark Metal 55_20IN Duct End Cap 20 Inch Crimped

Product Description

The SOUTHWARK METAL 55_20IN is a 20-inch diameter crimped round sheet metal duct end cap fabricated from hot-dipped galvanized steel. It is used to close off the open end of a round sheet metal duct section, terminating airflow at a branch or trunk line dead end. The crimped end allows it to slip over the duct collar for a secure, snug fit without additional fasteners in most installations. HVAC sheet metal installers and duct fabricators are the primary trades working with this fitting. The galvanized steel construction resists corrosion in both supply and return air duct systems operating under normal residential and light commercial conditions.

This end cap is suited for round duct systems in residential and light commercial HVAC installations where a branch line or main trunk requires termination. It conforms to ACCA and SMACNA standards, making it appropriate for use in systems designed and installed to those specifications. The 20-inch diameter sizing serves larger trunk duct runs commonly found in commercial rooftop unit systems, large residential zoned systems, and new construction ductwork fabrication.

Key Features

• 20-inch diameter fits standard round sheet metal duct of the same nominal size
• Crimped end allows direct slip-fit installation over duct collar
• Hot-dipped galvanized steel construction provides corrosion resistance
• Meets ACCA and SMACNA applicable standards for duct fabrication
• Round profile compatible with standard spiral and snap-lock round duct systems

Compatibility

Designed as an OEM-style sheet metal fitting for use with 20-inch nominal diameter round duct systems fabricated and installed to ACCA and SMACNA standards.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal contractor. The system should be de-energized and the air handler or fan shut down before any duct fitting work is performed. Sheet metal screws and UL-listed foil tape or mastic sealant should be applied at the joint per SMACNA duct construction standards. Follow all applicable local mechanical codes when terminating duct sections.

Technical Specifications

• Size: 20 inches diameter
• Material: Hot-Dipped Galvanized Steel
• Type: Crimped, Round
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 55_20IN