Southwark Metal 273106 Straight Stack Boot 3-1/4 Inches X 10 Inches 6 Inches Collar 30 Gauge Galvanized Steel

Product Description

The Southwark Metal 273106 is a straight stack boot designed for residential and light commercial HVAC duct systems. It connects a rectangular floor or wall duct to a round collar, allowing conditioned air to flow from the main duct system into a room or zone. HVAC installers and sheet metal contractors rely on this type of fitting when running floor-to-ceiling stack duct systems, commonly found in homes with limited wall cavity space. The 273106 fits a duct opening of 3-1/4 inches by 10 inches and uses a 6 inches round collar for the riser connection. The body is formed from 30 gauge hot dipped galvanized steel meeting ASTM A653 CS Type B standards, which provides corrosion resistance and structural integrity in both exposed and enclosed installations. The collar is built from heavier 28 gauge galvanized steel for added rigidity at the connection point, and it features a hemmed edge that gives a clean, safe finish and reduces the risk of cuts during installation. The collar hem is 2 inches deep. Stack s-cleats are included on each long side of the boot, manufactured from 28 gauge steel, with straight s-cleat lengths of 1 inch. These cleats allow the boot to lock into adjoining duct sections quickly and securely without additional fasteners. The unit is not insulated and not flanged, making it a straightforward mechanical connection component. It is manufactured in the USA and carries Prop 65 compliance. Collar sizes from 4 inches to 8 inches are available across the 27 product family, giving contractors flexibility across multiple stack configurations. This boot ships as a single unit and is stocked by HVAC distributors for fast-turn jobsite delivery.

• 3-1/4 inches by 10 inches boot opening fits standard residential and commercial stack duct sizes
• 6 inches round collar with hemmed edge built from 28 gauge galvanized steel for a secure, safe connection
• Includes 28 gauge stack s-cleats on each long side for tool-free, fast mechanical assembly

Product Highlights

The Southwark Metal 273106 straight stack boot delivers a reliable, code-compliant connection between rectangular duct and round collar in floor or wall stack systems. Hot dipped galvanized steel construction and USA manufacturing make it a dependable choice for professional HVAC installers.

Product Information

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 273106

Technical Specifications

• Boot Type: Straight Stack
• Boot Size: 3-1/4 inches x 10 inches
• Collar Size: 6 inches
• Body Gauge: 30 GA
• Collar Gauge: 28 GA
• Material: Hot Dipped Galvanized Steel, ASTM A653 CS Type B
• Galvanized: Yes
• Flanged: No
• Insulated: No
• Collar Hem Depth: 2 inches
• S-Cleat Length: 1 inch
• Country of Origin: USA
• Prop 65: Yes
• Unit of Measure: Each
• Weight: 0.9 pounds
• UPC: 099274509890