Mm Manufacturing 641R6-12X12X10 Register Box R-6 12x12x10

Product Description

The MM Manufacturing 641R6-12X12X10 is an R-6 insulated register box with flange, designed for use in residential and light commercial forced-air duct systems. This register box connects supply ductwork to a ceiling, floor, or wall register boot location, providing an insulated transition point that helps reduce heat loss and condensation at the supply outlet. With a 12 x 12 x 10 inch opening configuration and integrated flange, it is ready for direct register or grille attachment. HVAC installers use this type of register box during new construction or retrofit duct work to maintain system efficiency at the supply terminus.

This register box is suited for residential forced-air heating and cooling systems where R-6 insulation value is required at the supply outlet. It is commonly installed in attic-dropped, overhead, or floor-mounted supply configurations. The flanged design simplifies attachment of standard registers or grilles at the finish surface. Typical applications include new construction duct rough-ins and replacement of damaged or uninsulated existing register boxes in ducted HVAC systems.

Key Features

• R-6 insulation rating reduces heat transfer and condensation at the supply outlet
• Integrated flange provides a clean, secure mounting surface for registers or grilles
• 12 x 12 x 10 inch register opening suits standard supply register sizes
• Package dimensions of 14 x 14 x 6.75 inches allow compact jobsite storage and transport
• Lightweight at 3 pounds for easy single-technician handling during installation

Compatibility

Designed as an OEM-style replacement or new-construction component for residential and light commercial forced-air supply duct systems requiring a flanged register box with R-6 insulation at a 12 x 12 x 10 inch outlet.

Installation Notes

Installation is typically performed by a licensed HVAC technician or sheet metal contractor. Power down the air handling unit and confirm the system is de-energized before beginning duct work. Secure the register box to the structural framing using appropriate fasteners, and seal all duct connections with listed duct mastic or UL 181-rated tape per local mechanical code requirements. Do not compress the insulation during installation, as compression reduces the effective R-value.

Technical Specifications

• Insulation Rating: R-6
• Register Opening: 12 x 12 x 10 inches
• Package Length: 14 inches
• Package Width: 14 inches
• Package Height: 6.75 inches
• Weight: 3 pounds

Standard Information

• Brand: MM Manufacturing
• Manufacturer Part Number: 641R6-12X12X10