Southwark Metal 1701425R8 170 Return Air Box R8 Insulation 14 Inches X 25 Inches 8 Inches Deep No Flange

Product Description

The Southwark Metal 1701425R8 is a Model 170 Return Air Box designed for residential and light commercial HVAC duct systems. It measures 14 inches wide by 25 inches long and 8 inches deep, giving installers a reliable, pre-sized enclosure for return air applications. The box ships without a flange, which suits installations where a flanged edge is not required or where the installer prefers to make custom connections on site. R8 insulation is factory-applied to the interior, helping to reduce heat gain or loss through the box walls and improving overall system efficiency. This level of insulation is well suited for installations in unconditioned spaces such as attics, crawl spaces, and garage ceilings where temperature differentials are significant. The shell is fabricated from 26-gauge hot-dipped galvanized steel meeting ASTM A653 CS Type B standards, which provides strong corrosion resistance and long service life. Galvanized steel construction is a trusted choice among HVAC technicians and sheet metal contractors because it withstands moisture exposure and maintains structural integrity over years of use. The unit weighs approximately 5.24 pounds, making it manageable for single-person installation in tight spaces. Southwark Metal manufactures this product in the USA, and it carries a Prop 65 designation. HVAC professionals installing forced-air return systems, duct boots, or plenum returns will find this box straightforward to work with. It fits standard rough openings and pairs with compatible return air grilles and filter grille assemblies. Contractors looking for a durable, insulated, no-flange return air box in a 14 by 25 inch footprint will recognize the 1701425R8 as a practical, code-compatible solution.

• 14 inches x 25 inches face opening with 8 inches depth for standard return air rough-in applications
• R8 factory-applied insulation reduces heat transfer in unconditioned spaces such as attics and crawl spaces
• 26-gauge hot-dipped galvanized steel per ASTM A653 CS Type B for lasting corrosion resistance

Product Highlights

The Southwark Metal 1701425R8 delivers a factory-insulated, no-flange return air box built from heavy-gauge galvanized steel and sized at 14 inches x 25 inches x 8 inches deep, making it a dependable choice for HVAC duct installations in unconditioned spaces.

Product Information

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 1701425R8

Technical Specifications

• Product Family: Model 170
• Size: 14 inches x 25 inches
• Depth: 8 inches
• Gauge: 26 GA
• Material: Galvanized Steel
• Galvanized: Yes
• Material Standard: ASTM A653 CS Type B
• R-Value: R8
• Insulated: Yes
• Flanged: No
• Weight: 5.24 pounds
• Cubic Measurement: 1.6204
• Country of Origin: USA
• Prop 65: Yes
• Unit of Measure: Each