white oak engineered floor T&G or Click System Lacquered/Oiled Underfloor heating ... AB,BCD, CDE, Prime, selected, commercial Common Size (T*W*L)18/15*122/150*300-1900mm Random Length Other ... narrow plank, wideplank/long plank, the construction is generally T&G(Tongue and Groove) or click fit (click system ... ),14mm/15mm/18mm/19mm/20mm/21mm in thickness, veneer's thickness can be 0.6mm/2mm/3mm/4mm/5mm/6mm ...