Southwark Metal 27R_4X10X7 Sheet Metal Pipe Boot 4x10x7

Product Description

The SOUTHWARK METAL 27R_4X10X7 is a straight sheet metal pipe boot designed to transition a round duct collar to a rectangular register opening in residential and light commercial HVAC duct systems. Built from hot dip galvanized steel, this boot measures 4 inches by 10 inches at the register end and connects to a 7-inch diameter round collar. It is installed by HVAC technicians and sheet metal contractors as part of supply-side duct distribution systems. The galvanized construction resists corrosion in attic, crawlspace, and unconditioned space applications. Straight geometry simplifies installation where the duct runs directly to the floor, wall, or ceiling register without offset.

This pipe boot is suited for residential forced-air heating and cooling systems where a round supply trunk or branch feeds a standard rectangular floor or wall register. The 4-inch by 10-inch face matches one of the most common residential register sizes, and the 7-inch diameter collar connects directly to round flex duct or rigid spiral pipe. Typical installations include floor boots in wood-framed construction and wall or ceiling drops where a straight run is practical. HVAC sheet metal contractors and installers working to ACCA and SMACNA standards will find this boot compliant with those widely referenced duct fabrication guidelines.

Key Features

• Hot dip galvanized steel construction resists corrosion in unconditioned spaces
• Straight register-type geometry for direct, low-profile duct terminations
• 4 inch by 10 inch rectangular opening fits standard residential register sizes
• 7-inch diameter round collar connects to round flex or rigid duct
• Fabricated to ACCA and SMACNA applicable standards

Compatibility

Designed as an OEM-style replacement or new-construction component for residential and light commercial forced-air supply duct systems using 7-inch round duct feeding a 4-inch by 10-inch rectangular register.

Installation Notes

Installation should be performed by a licensed HVAC technician or sheet metal contractor in accordance with SMACNA duct construction standards and local mechanical codes. Shut down the air handling system before connecting or modifying any duct section. Secure the round collar to the duct with sheet metal screws and seal all joints with UL 181-rated mastic or foil tape to prevent air leakage. Avoid over-compressing flex duct at the collar connection, as this increases static pressure and reduces airflow.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Register Opening (Size A): 4 inches x 10 inches
• Round Collar Diameter (Size B): 7 inches
• Type: Register, Straight
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 27R_4X10X7