Southwark Metal 1701420R8 Return Air Box R8 Insulation 14 Inches X 20 Inches

Product Description

The Southwark Metal 1701420R8 is a 170 Series return air box designed for residential and light commercial HVAC installations. It measures 14 inches by 20 inches and comes with R8 insulation factory-applied to the exterior. This unit is built for use in forced-air duct systems where a return air opening must be framed, enclosed, and insulated to prevent condensation, heat loss, and energy inefficiency. HVAC technicians and installers rely on return air boxes like this one to connect wall or floor return grilles to the main duct system. The R8 insulation rating makes this box well suited for installations in unconditioned spaces such as attics, crawl spaces, or exterior wall cavities where thermal performance is critical. The box is constructed from 26-gauge hot-dipped galvanized steel meeting ASTM A653 CS Type B standards, which provides long-term corrosion resistance and structural rigidity. The 1-inch flange turned outward on all sides makes fastening to framing members and duct board straightforward, saving time during rough-in. The standard depth is 8 inches, giving installers enough clearance for most framing configurations. At a listed dimensional weight of 16 pounds and an actual weight of 6 pounds, this box is easy to handle and maneuver in tight spaces. The galvanized finish eliminates the need for additional coating in most applications. This product is manufactured in the USA and is sold individually. It is the correct choice for any HVAC installer who needs a properly insulated, flanged return air box in a 14-inch by 20-inch opening with an R8 thermal barrier.

• R8 insulation factory-applied for use in unconditioned or semi-conditioned spaces
• 26-gauge hot-dipped galvanized steel construction per ASTM A653 CS Type B for corrosion resistance and durability
• 1-inch outward-turned flange on all sides for secure attachment to framing and duct board

Product Highlights

The Southwark Metal 1701420R8 return air box delivers reliable thermal performance with R8 insulation and rugged 26-gauge galvanized steel construction, making it a dependable choice for HVAC return air duct applications in both residential and light commercial settings.

Product Information

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 1701420R8

Technical Specifications

• Size: 14 inches x 20 inches
• R-Value: R8
• Gauge: 26 GA
• Material: Galvanized Steel
• Galvanized: Yes
• Flanged: Yes
• Insulated: Yes
• Height: 6 inches
• Length: 15.5 inches
• Width: 21.5 inches
• Weight: 6 pounds
• Product Family: 170
• Country of Origin: USA
• Unit of Measure: Each