Southwark Metal 24_3-1/4X12X6 Duct Wall Stack Elbow Boot

Product Description

The SOUTHWARK METAL 24_3-1/4X12X6 is a sheet metal duct wall stack 90-degree elbow boot designed for residential and light commercial HVAC duct distribution systems. Fabricated from hot dip galvanized steel, this fitting transitions a rectangular duct opening measuring 3-1/4 inches by 12 inches to a 6-inch diameter round collar at a 90-degree angle. The wall stack configuration allows the duct run to turn and terminate through a wall cavity, delivering conditioned air to a floor or baseboard register. Licensed HVAC technicians and sheet metal installers use this type of fitting during new construction and system retrofit work.

This elbow boot is suited for forced-air heating and cooling systems where duct runs must transition from a vertical or horizontal trunk line through a wall cavity to a floor or wall register. The 3-1/4 by 12 inch face is a standard residential duct dimension, making this fitting a common choice in single-family and multi-family construction. The 90-degree elbow geometry directs airflow precisely where the wall stack terminates at the register opening. Fabrication meets ACCA and SMACNA applicable standards, which are the recognized benchmarks for residential and commercial sheet metal duct construction.

Key Features

• Hot dip galvanized steel construction for corrosion resistance in conditioned air applications
• 3-1/4 inch by 12 inch rectangular face (Size A) matches standard residential trunk-line duct dimensions
• 6-inch diameter round collar (Size B) connects to standard round boot or register neck
• 90-degree wall stack elbow geometry routes airflow through wall cavities to floor or baseboard registers
• Fabricated to ACCA and SMACNA applicable standards for duct construction

Compatibility

Designed as an OEM-style replacement and new-installation fitting for residential and light commercial forced-air duct systems using standard 3-1/4 inch by 12 inch rectangular duct with a 6-inch round collar outlet.

Installation Notes

Installation of sheet metal duct fittings should be performed by a licensed HVAC technician or sheet metal mechanic in accordance with SMACNA duct construction standards and local mechanical codes. Shut down the air handler or furnace and confirm the system is de-energized before cutting into or modifying any duct section. Secure all joints with sheet metal screws and seal with UL 181-listed mastic or foil tape to prevent air leakage. Avoid over-crimping the round collar, as deformation reduces airflow and can cause turbulence noise at the register.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Size A (Rectangular Face): 3-1/4 inches x 12 inches
• Size B (Round Collar Diameter): 6 inches
• Type: Wall Stack, 90 Degree Elbow Boot
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 24_3-1/4X12X6