Southwark Metal 27_3-1/4X14X8 Duct Boot Wall Stack

Product Description

The SOUTHWARK METAL 27_3-1/4X14X8 is a straight wall stack sheet metal duct boot designed to transition from rectangular duct to a round outlet in residential and light commercial HVAC duct systems. Constructed from hot dip galvanized steel, this boot offers corrosion resistance suited to long-term installation in conditioned spaces and wall cavities. The rectangular opening measures 3-1/4 inches by 14 inches, and the round outlet measures 8 inches in diameter. HVAC installers and sheet metal contractors use this fitting to terminate supply duct runs at wall registers in forced-air heating and cooling systems.

This duct boot is configured as a straight wall stack, making it appropriate for installations where the duct runs vertically inside a wall cavity and terminates at a wall-mounted register. It is used in residential forced-air systems as well as light commercial applications where ACCA and SMACNA ductwork standards apply. The straight geometry simplifies alignment during rough-in and finish installation, reducing fitting adjustments at the register face.

Key Features

• Hot dip galvanized steel construction provides corrosion resistance for long-term service
• Straight wall stack configuration for vertical duct-to-wall register terminations
• 3-1/4 inch by 14 inch rectangular inlet matches standard residential trunk and branch duct sizing
• 8 inch diameter round outlet for connection to round collar or register boot neck
• Meets ACCA and SMACNA applicable standards for sheet metal ductwork fabrication

Compatibility

Designed as an OEM-style sheet metal duct fitting for residential and light commercial forced-air HVAC systems requiring a straight wall stack boot with a 3-1/4 inch by 14 inch rectangular opening and an 8 inch round outlet.

Installation Notes

Installation should be performed by a licensed HVAC technician or sheet metal contractor in accordance with SMACNA and ACCA ductwork guidelines. Power down the air handling system before connecting or sealing the boot to the duct run. Seal all joints with listed duct mastic or UL 181-rated tape to meet applicable mechanical codes. Do not compress or over-drive sheet metal screws through the boot collar, as this can distort the round outlet and affect register fit.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Type: Wall Stack, Straight
• Rectangular Opening (Size A): 3-1/4 inches x 14 inches
• Round Outlet Diameter (Size B): 8 inches
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 27_3-1/4X14X8