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The RECTORSEAL 150MB4X10 is a stamped steel 2-way floor supply register designed for residential HVAC systems that require floor-level air delivery with integrated airflow balancing. The 4-inch by 10-inch face dimension fits standard floor boot openings. A built-in multi-shutter damper allows the installer to adjust airflow volume and direction directly at the register without additional hardware. The brown powder-coat finish provides corrosion resistance suited to floor-mounted applications where foot traffic and cleaning contact are routine. Licensed HVAC technicians and qualified HVAC installers are the typical end users for this type of supply-side fitting.
This register is intended for floor installations in residential forced-air systems. The 2-way discharge pattern allows air to be directed forward, to the side, or split between both directions, supporting balanced room-level airflow distribution. It fits 4-inch by 10-inch rough floor boot openings, a common nominal size in residential new construction and retrofit applications. The integrated multi-shutter damper eliminates the need for a separate manual balancing damper at the register location.
Designed as an OEM-style replacement or new-installation floor supply register for residential forced-air HVAC systems with standard 4-inch by 10-inch floor boot openings.
Installation is typically performed by a licensed HVAC technician or qualified installer. Before removing or replacing a floor register, shut off the air handler or furnace to avoid debris entering the duct system. Verify the rough floor boot opening measures 4 inches by 10 inches before installation. Secure the register flush to the floor surface and confirm the multi-shutter damper operates freely before returning the system to service.
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