Flush MountFlush mount floor registers sit flush with hardwood flooring. They are designed to lay flat with the surface of wood flooring, providing a smooth and seamless look. Each size is available in 3 4"*, 5 8", 9 16" or 1 2" thickness, so it installs flush with nearly any thickness of hardwood flooring on the market today. It is recommended that this floor register be installed during the installation of your hardwood floor. Flush mount vents add the