EngineeredWalnutFlooring: Size: 900-1860 x 90-190 x 14-21mm, top layer: 3-6mm.Species: Oak, Iroko, Doussie,Maple, Cherry, Walnut, Teak, etc.Finish: Flat /Brushed; Unfinished /Prefinished.UV lacquered, Natural Oiled, etc.Grooving: T&G orClick System.Micro bevelled or Square edge.