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The RECTORSEAL 150MB4X8 is a stamped steel 2-way floor supply register with an integrated multi-shutter damper for adjustable airflow control. The 4-inch by 8-inch face size fits standard residential floor boot openings, and the stamped louver design delivers consistent directional air discharge. A durable brown finish provides corrosion resistance suited to long-term floor installation. This register is installed by HVAC technicians and qualified service professionals in residential forced-air supply systems where clean aesthetics and controlled directional airflow are required.
The 150MB4X8 is designed for floor supply applications in residential HVAC systems. The 2-way louver configuration allows the installer to direct conditioned air in two directions across the floor plane, improving air distribution in the conditioned space. The multi-shutter damper allows airflow volume to be adjusted or shut off at the register face without accessing the duct system. This register is a practical choice for new construction and replacement installations in standard floor boot openings measuring 4 inches by 8 inches.
Designed as an OEM-style replacement or new-installation floor supply register for standard 4-inch by 8-inch residential floor boot openings in forced-air HVAC systems.
Installation is performed by licensed HVAC technicians or qualified installers. Turn off the air handler or furnace at the thermostat and disconnect power before removing an existing register. Verify the floor boot opening measures 4 inches by 8 inches before installation to ensure a proper fit. Secure the register per local mechanical code requirements and confirm the damper operates freely after installation.
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