PRBAMGR412HN - PR Bamboo Grill4X12 FWF Horizontal Natural Fits5/8 Standard Vent- Flush Mount GrillVent lies in its own frame assembly, this style sits flush with any hardwood floor. Provides a seamless and refined appearance to a wood floor that looks truly custom.-Can be used with flooring thicknesses: 3/8", 1/2", 5/8" and 3/4".-Installation with wood flooring is recommended.-Optional metal damper allows personalized airflow regulation.-Frame is permanently mounted to floor, while vent inset is removable for cleaning.-Frame has 45 degree mitered corners.See our article on Hardwood Grill/Vent covers in Flooring 101 for information on measurement.