Southwark Metal 1702020R8 Return Air Box R8 Insulation 20 Inches X 20 Inches

Product Description

The Southwark Metal 1702020R8 is a Model 170 return air box designed for residential and light commercial HVAC systems. It measures 20 inches by 20 inches and comes with R8 insulation installed from the factory. This unit is built for use in forced-air return duct systems where a square or rectangular air box is needed to connect ductwork to a ceiling, floor, or wall grille opening. HVAC installers and sheet metal contractors rely on this type of return air box to maintain proper airflow balance, reduce noise, and meet energy code requirements. The R8 insulation rating means the box provides strong thermal resistance, helping prevent condensation on the exterior and reducing heat gain or loss as air moves through the return system. This is especially important in unconditioned spaces like attics, crawlspaces, or mechanical rooms. The box is fabricated from 26-gauge hot-dipped galvanized steel per ASTM A653 CS Type B standards, giving it excellent corrosion resistance and structural rigidity. A 1-inch outward-turned flange is included as standard, making it easy to attach to surrounding ductwork or framing. The standard depth is 8 inches. The galvanized coating protects against rust in humid environments. This product is manufactured in the USA and is compliant with Proposition 65 requirements. It ships as a single unit and is ready for installation in new construction or retrofit HVAC projects. Trade professionals who need a reliable, well-insulated return air plenum box in a 20-by-20-inch size will find this unit straightforward to spec and install.

• R8 insulation factory-applied for strong thermal resistance and condensation control
• 26-gauge hot-dipped galvanized steel construction per ASTM A653 CS Type B for durability and corrosion resistance
• 1-inch outward-turned flange standard for easy connection to ductwork and framing

Product Highlights

The Southwark Metal 1702020R8 return air box delivers a USA-made, heavily insulated solution for 20-by-20-inch return air applications, combining galvanized steel durability with R8 thermal performance for professional HVAC installations.

Product Information

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 1702020R8

Technical Specifications

• Size: 20 inches x 20 inches
• R-Value: R8
• Gauge: 26 GA
• Material: Galvanized Steel
• Galvanized: Yes
• Flanged: Yes
• Insulated: Yes
• Length: 22 inches
• Width: 22 inches
• Height: 6 inches
• Weight: 8 pounds
• Country of Origin: USA
• Unit of Measure: EA