Unfinished Red Oak Hardwood FlooringUnfinished Red Oak Hardwood Flooring Bring classic hardwood character into your space with unfinished red oak flooring in a versatile 3. 25 inch plank. This solid, nail down floor features a light brown tone in its raw state, square edges for a clean traditional look, and a tongue and groove profile designed for a secure fit during installation. Because it arrives unfinished, it gives homeowners and pros the flexibility to stain and seal it on site