Mm Manufacturing 203RF-12X6X7 90 Degree Register Boot

Product Description

The MM MANUFACTURING 203RF-12X6X7 is a 90-degree angle register boot with flange, designed to transition from round duct to a rectangular floor, wall, or ceiling register opening. This sheet metal fitting redirects airflow at a right angle, making it a standard component in residential and light commercial forced-air duct systems. The boot measures 12 x 6 x 7 inches at the register face and weighs 1.8 pounds. HVAC installers and sheet metal mechanics use this fitting during new construction and duct replacement work where a 90-degree transition is required between the supply trunk and a register diffuser.

This fitting is suited for residential and light commercial HVAC duct installations where a perpendicular transition from round supply duct to a rectangular register opening is needed. The flanged design helps secure the register face and provides a clean finished appearance at the floor, wall, or ceiling surface. The 203RF series is available in eight common sizes to accommodate 5, 6, 7, 8, and 9-inch round duct connections, making it a versatile option across a range of supply branch configurations.

Key Features

• 90-degree angle configuration routes airflow from round duct to a rectangular register opening
• Integral flange provides a clean register face mount at floor, wall, or ceiling surfaces
• 12 x 6 x 7 inch register opening fits standard diffuser sizes
• Lightweight construction at 1.8 pounds for easy single-person handling during installation
• Available across eight common sizes for 5 through 9 inch round duct compatibility

Compatibility

Designed as an OEM-style sheet metal register boot for use in residential and light commercial forced-air HVAC duct systems requiring a 90-degree transition from round supply duct to a rectangular register opening. Compatible with 5, 6, 7, 8, and 9 inch round duct connections depending on the selected size within the 203RF series.

Installation Notes

Installation is typically performed by licensed HVAC technicians or sheet metal mechanics. Shut down the air handling unit and disconnect power before making duct connections. Secure the boot to the branch duct with sheet metal screws and seal all joints with UL-listed foil tape or mastic sealant in accordance with local mechanical codes. The flanged face should be fastened flush to the subfloor or wall surface before setting the register grille.

Technical Specifications

• Register Face Size: 12 x 6 x 7 inches
• Package Length: 13 inches
• Package Width: 14.25 inches
• Package Height: 10.5 inches
• Weight: 1.8 pounds
• Configuration: 90-Degree Angle with Flange

Standard Information

• Brand: MM MANUFACTURING
• Manufacturer Part Number: 203RF-12X6X7