Southwark Metal 27R_4X10X4 Sheet Metal Pipe Boot 4x10

Product Description

The SOUTHWARK METAL 27R_4X10X4 is a straight sheet metal pipe boot designed to transition from round duct to a rectangular register opening in residential and light commercial HVAC duct systems. Constructed from hot dip galvanized steel, this boot provides corrosion resistance suited for supply air distribution in forced-air heating and cooling applications. The rectangular opening measures 4 inches by 10 inches (Size A), and the round collar measures 4 inches in diameter (Size B). HVAC installers and sheet metal contractors use this fitting to terminate duct runs at floor, wall, or ceiling register locations.

This pipe boot is used in forced-air HVAC systems where a round duct branch connects to a standard 4-by-10-inch register or grille. It is a common fitting in residential new construction and renovation work, installed at the end of a supply duct run before the register face is applied. The straight configuration positions the duct outlet perpendicular to the register plane, making it appropriate for floor or ceiling installations where the duct approaches directly from below or above.

Key Features

• Hot dip galvanized steel construction for corrosion resistance in air distribution applications
• Rectangular opening: 4 inches by 10 inches to match standard register size
• Round collar: 4 inches in diameter for direct duct connection
• Straight boot configuration for floor or ceiling register terminations
• Meets ACCA and SMACNA applicable standards for sheet metal duct fittings

Compatibility

Designed as an OEM-style sheet metal fitting compatible with standard 4-inch round supply duct and 4-by-10-inch floor, wall, or ceiling registers in residential and light commercial forced-air HVAC duct systems.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor in accordance with SMACNA duct construction standards and local mechanical codes. Shut down the air handling system before connecting or modifying duct branches. Secure the boot to the round duct using sheet metal screws and seal all joints with UL-listed duct sealant or foil tape to prevent air leakage. Ensure the rectangular collar seats flush against the subfloor or ceiling substrate before fastening the register face.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Size A (Rectangular Opening): 4 inches x 10 inches
• Size B (Round Collar Diameter): 4 inches
• Type: Register, Straight
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 27R_4X10X4