This European White Oak engineered flooring is 3/4″ thick with a generous 5mm wear layer. There are 4 rows per box; 2 rows are full length (7′-2″), 1 row has 2 pieces and 1 row has 3 pieces. It’s wire-brushed and fumed, which is a process that changes the color of the top layer of oak through and through. It’s suitable for installations above and below grade, and additionally over water-based radiant heat systems. It can be nailed, glued or floated. The flooring is finished with a clear zero VOC vegetable-based oil that offers on-the-spot reparability without requiring refinishing of the entire floor. The finish has a 50 year warranty, the structure is lifetime. Knots and natural features of the wood are attributes of this grade.