Find durability in Traditions Solid. Oak's hard surface and tight grain patterns minimize the visibility of dents and scratches. Harris' solid wood floors live up to their name. Traditions Solid is precisely milled from a single piece of wood and cut 3/4" thick in random lengths up to 7'. The planks are 2-1/4" or 3-1/4" wide. Solid floors must be nailed down on or above ground level over OSB board or plywood subfloor.