Southwark Metal 27R_4X12X7 Straight Sheet Metal Pipe Boot

Product Description

The SOUTHWARK METAL 27R_4X12X7 is a straight sheet metal pipe boot designed to transition from round duct to a floor or ceiling register opening in residential and light commercial HVAC systems. Fabricated from hot dip galvanized steel, this boot provides a durable, corrosion-resistant connection point at the register end of a duct run. The rectangular opening measures 4 inches by 12 inches, mating to a standard floor or ceiling register, while the round collar measures 7 inches in diameter for duct attachment. HVAC sheet metal installers and duct fabricators use this fitting as a terminal component in forced-air supply or return systems built to ACCA and SMACNA standards.

This pipe boot is suited for new construction and retrofit duct installations in residential forced-air heating and cooling systems as well as light commercial applications. It installs at the terminal end of a round duct run where the duct transitions to a rectangular floor boot or ceiling diffuser opening. The 4 inch by 12 inch register face aligns with standard 4 x 12 register grilles, and the 7 inch collar accepts standard round flexible or rigid duct. Applications include trunk-and-branch supply systems and individual room drops where a round-to-register transition is required.

Key Features

• Hot dip galvanized steel construction for corrosion resistance in conditioned air environments
• Straight boot profile for direct round-to-register transitions without offset4 inch by 12 inch rectangular opening matches standard floor and ceiling register grille sizes
• 7 inch diameter round collar for connection to standard round duct
• Fabricated to ACCA and SMACNA applicable standards for duct construction

Compatibility

Designed as an OEM-style sheet metal fitting for use with standard 4 inch by 12 inch floor or ceiling register grilles and 7 inch round duct in residential and light commercial forced-air HVAC duct systems built to ACCA and SMACNA guidelines.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified sheet metal duct installers. The duct system should be fully de-energized and the air handler shut down before connecting or modifying any duct components. Secure the round collar to the duct with sheet metal screws and foil-backed mastic or UL 181-rated tape per SMACNA installation standards. Ensure the rectangular register opening is flush with the finished floor or ceiling surface before fastening the register grille.

Technical Specifications

• Material: Hot Dip Galvanized Steel
• Register Opening (Size A): 4 inches x 12 inches
• Round Collar Diameter (Size B): 7 inches
• Boot Type: Straight
• End Type: Register
• Applicable Standards: ACCA, SMACNA

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 27R_4X12X7