This European White Oak engineered flooring is 9/16″ thick with a 3mm wear layer. There are 6 rows per box; 3 rows are full length (7′-2″), 2 rows have 2 pieces and 1 row has 3 pieces. It’s wire-brushed, distressed, fumed, and hand-scraped. It is 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 UV cured low gloss oil. The finish has a 25 year warranty, the structure is lifetime. Occasional knots and natural features of the wood are attributes of this grade.