White oak drop in wood floor register is a kind of wood register with self rimming edge. This kind of wood floor register can drop in duct opening easily, so it is called drop in floor register or surface mount floor register, as it normally surface mounted onto the duct opening of flooring. The floor register with size 4x10 inch is fit for 4x10 inch duct opening. This kind of wood vent is not recommended to be installed in high traffic area.