Accord AOFMWU410 Floor Register with Flushed Mount Louvered, 4-Inch x 10-Inch(Duct Opening Measurements), Unfinished White Oak Solid oak construction; color may vary slightly based on the underlying wood product Sits flush with 3/4-in hardwood flooring Designed to be installed before flooring; not intended for high traffic areas Adjustable sliding airflow damper Listed product sizes refer to the duct opening measurements, not the register itself