R.L. Colston 3/4 in. 2 Common Red Oak Unfinished Solid Hardwood Flooring 4 in. Wide, $3.29 USD/Box, LL Flooring (Lumber Liquidators)

Key aspects are the use of red oak and possible installation above and on grade. It showcases a natural wood grain look, with a thickness of 3/4 inch and a width of 4 inches, available in 8.25 and 84-inch lengths. Both residential and light commercial settings are possible, using either nail or glue installation methods, but there is no warranty.