Southwark Metal 59F6127SD Register Boot with Flange 12x6x7

Product Description

The SOUTHWARK METAL 59F6127SD is a rectangular register boot with flange, designed for low-velocity air distribution in residential and light commercial duct systems. This 203RF-style fitting transitions from round duct to a rectangular register opening, allowing supply air to be directed through a floor, wall, or ceiling register. The unit measures 12 inches by 6 inches by 7 inches and includes an integrated flange that seats the register grille flush against the finished surface. HVAC installers use this boot during new construction and retrofit duct fabrication work.

This register boot is commonly used in forced-air heating and cooling systems where a round branch duct must terminate at a standard rectangular register opening. It is suited for residential duct systems using conventional sheet metal trunk-and-branch layouts, as well as light commercial applications with similar low-velocity supply configurations. The integrated flange simplifies register grille installation and provides a clean finished appearance at the register face.

Key Features

• 203RF-style rectangular register boot with built-in flange for flush grille seating
• Nominal dimensions of 12 inches by 6 inches by 7 inches for standard register openings
• Transitions from round duct to rectangular register face in a single fitting
• Flange design reduces finishing steps and supports a secure grille mount
• Suitable for floor, sidewall, and ceiling register installations

Compatibility

Designed as an OEM-style sheet metal fitting for residential and light commercial forced-air duct systems using standard rectangular register openings.

Installation Notes

Installation is performed by licensed HVAC technicians or sheet metal contractors following applicable mechanical codes. Power down the air handling unit and close the system before connecting or sealing duct fittings. Secure the boot to the branch duct using sheet metal screws and approved duct sealant or mastic per local mechanical code requirements. Do not operate the system without all register openings covered to prevent pressure loss and debris entry.

Technical Specifications

• Style: 203RF Rectangular Register Boot with Flange
• Dimensions: 12 inches x 6 inches x 7 inches

Standard Information

• Brand: SOUTHWARK METAL
• Manufacturer Part Number: 59F6127SD