Self rimming floor register, also called drop in floor register or surface mount floor register, which fits over the surface of floor opening, simply drops into an opening cut in the existing floor. The vent is not recommended for use in traffic areas. Available Wood Species: Solid wood species: white oak, red oak, Brazilian cherry, maple, hickory, American cherry, santos mahogany, bamboo, American walnut, Brazilian walnut, and so on. Available Finishes: Unfinish, natural finish, medium finish, and any other prefinishes of a variety of wood species for your choice.