Metal-fab mffr48w Floor Register 4x8 in 130 Cfm White

Product Description

The METAL-FAB mffr48w is a stamped steel floor register designed for residential and light commercial forced-air HVAC systems. Sized at 4 x 8 inches with a duct opening of 7-7/8 x 3-15/16 inches, it fits standard floor duct cutouts and handles up to 130 CFM of airflow. The faceplate is precision stamped from heavy-gauge steel and finished in a scratch-resistant white powder coat, providing a clean appearance with minimal upkeep. HVAC installers and service techs specify this register when replacing worn or damaged floor grilles in ducted heating and cooling systems.

The mffr48w is suited for floor-mounted supply duct terminations in residential homes and light commercial spaces. It installs over a standard rectangular floor duct boot where the finished opening requires a 4 x 8 inch register. The overall faceplate dimensions are 9-1/2 inches wide by 5-1/2 inches tall, providing adequate overlap to cover the subfloor cutout. The white powder-coated finish blends with common interior trim and flooring in both new construction and retrofit applications.

Key Features

• Stamped heavy-gauge steel faceplate resists warping and physical damage underfoot
• Scratch-resistant white powder-coat finish requires no painting and withstands regular foot traffic
• 130 CFM airflow rating supports standard residential supply duct sizing
• Duct opening of 7-7/8 x 3-15/16 inches fits common floor boot terminations
• Faceplate overlap dimensions of 9-1/2 x 5-1/2 inches conceal subfloor cutout edges cleanly

Compatibility

Designed as an OEM-style replacement floor register for standard 4 x 8 inch rectangular floor duct boots in residential and light commercial forced-air HVAC systems.

Installation Notes

Floor registers are installed by HVAC technicians or qualified tradespeople as part of a ducted forced-air system. Before servicing the duct boot or surrounding area, shut down the air handler or furnace at the disconnect or thermostat. Secure the register to the floor using manufacturer-approved fasteners appropriate for the subfloor material; do not overtighten fasteners into hardwood or tile surrounds. Verify the duct boot is clean and free of debris before dropping the register into place.