Southwark Metal 21R82614 End Cap R8 Insulation 26 Inches X 14 Inches

Product Description

The Southwark Metal 21R82614 is a Model 21 End Cap with R8 insulation, designed for rectangular duct systems measuring 26 inches by 14 inches. This end cap is built for HVAC professionals who need a reliable, code-compliant way to seal the open ends of insulated rectangular ductwork. It is fabricated from hot-dipped galvanized steel that meets ASTM A653 CS Type B standards, giving it strong corrosion resistance for both residential and light commercial applications. The 26-gauge steel construction provides a sturdy, rigid fit that holds up under normal system pressures and temperature changes found in forced-air heating and cooling systems.

End caps like the 21R82614 play a critical role in duct system performance. A properly sealed duct end prevents conditioned air from escaping into unconditioned spaces, which directly affects system efficiency and energy costs. The R8 insulation rating means this cap meets the thermal resistance requirements commonly specified for ductwork in attics, crawl spaces, and other areas where heat gain or heat loss is a concern. HVAC installers and sheet metal contractors will recognize the S-Lock and drive-type connection, which allows for a secure, tool-friendly fit with standard duct sections. It is also available with an S-cleat for added connection flexibility on job sites.

This end cap is sold individually as a single unit and is manufactured in the USA, which supports domestic supply chain reliability for contractors and distributors. Southwark Metal is a well-known supplier of sheet metal duct products, and the 21R82614 fits into their broader line of insulated rectangular duct fittings. HVAC technicians, mechanical contractors, and sheet metal fabricators searching for galvanized duct end caps, insulated rectangular duct terminations, or R8 duct fittings in the 26 by 14 size will find this product straightforward to specify and install.

• Hot-dipped galvanized steel per ASTM A653 CS Type B for corrosion resistance and long service life
• R8 insulation rating meets common energy code requirements for ductwork in unconditioned spaces
• S-Lock and drive-type connection with S-cleat availability for fast, secure installation on rectangular duct runs

Product Highlights

The Southwark Metal 21R82614 delivers a code-ready, R8-insulated end cap solution for 26 inch by 14 inch rectangular duct systems. Its galvanized steel construction and S-Lock drive connection make it a dependable choice for HVAC installers and sheet metal contractors.

Product Information

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 21R82614

Technical Specifications

• Shape: Rectangle
• Material: Galvanized Steel
• Gauge: 26 GA
• Duct Size: 26 inches x 14 inches
• Insulation Rating: R8
• Connection Type: S-Lock Drive with S-Cleat Option
• Galvanized Coating: Yes
• Country of Origin: USA
• Weight: 2.07 pounds
• Unit of Measure: Each
• Prop 65: Yes