Wood High Output Flush Vent sits flush with ¾” hardwood flooring making for a seamless transition. All flush mount vents come complete with a 5/8” rabbited frame. Each frame will fit most ¾” tongue and groove flooring. It is highly recommended that this floor register be installed during the installation of your hardwood floor. Available in Domestic Species: Red & White Oak, Walnut, Maple, Hickory, Ash, R/O Oak, American Cherry, Pine.