Southwark Metal 24_3-1/4X10X7 Duct Wallstack Elbow Boot

Product Description

The SOUTHWARK METAL 24_3-1/4X10X7 is a 90-degree rectangular-to-round sheet metal duct boot designed for wallstack elbow applications in residential forced-air HVAC systems. Fabricated from hot-dipped galvanized steel, this fitting transitions a 3-1/4 inch by 10 inch rectangular duct opening to a 7 inch round collar at a 90-degree angle. It is installed where a trunk or branch duct run turns to supply a wall register or floor boot. HVAC sheet metal mechanics and duct installers work with this fitting during new construction and retrofit duct system projects. The galvanized steel construction provides corrosion resistance suitable for conditioned-air supply and return applications.

This boot fitting is used in residential and light commercial forced-air duct systems where a wallstack configuration is required. The 90-degree angle allows the duct to transition from a horizontal trunk line or branch run into a vertical wall cavity leading to a register. The 3-1/4 inch by 10 inch rectangular face matches standard wallstack and floor register dimensions commonly found in residential new construction. The 7 inch round collar connects to round branch duct or spiral pipe of the corresponding diameter.

Key Features

• 90-degree rectangular-to-round transition for wallstack elbow installations
• Rectangular face measures 3-1/4 inches by 10 inches to match standard register openings
• 7 inch round collar for connection to round branch duct or spiral pipe
• Hot-dipped galvanized steel construction for corrosion resistance in conditioned-air systems
• Meets ACCA and SMACNA applicable standards for duct fabrication and installation

Compatibility

Designed as an OEM-style sheet metal duct fitting for residential and light commercial forced-air HVAC duct systems requiring a 3-1/4 inch by 10 inch rectangular to 7 inch round 90-degree wallstack boot transition.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified sheet metal mechanics following SMACNA and ACCA duct construction standards. Power down the air handling unit and verify the system is de-energized before working in the duct system. Seal all joints with UL 181-rated mastic or foil tape per local mechanical code requirements. Do not overtighten sheet metal screws at the collar connection, as this can deform the round collar and compromise the duct seal.

Technical Specifications

• Material: Hot Dipped Galvanized Steel
• Rectangular Face Size (Size A): 3-1/4 inches x 10 inches
• Round Collar Diameter (Size B): 7 inches
• Angle: 90 degrees
• Type: Stack, Rectangular to Round Elbow Boot
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 24_3-1/4X10X7