... :4.5mm,4.8mm or 5mm,PaPa click system,v-groove,embossed surface. Size:12"x12"/18 ... 3mm, 0.5mm,0.7mm,1.0mm1) Simple angle, slide, licensed lock installation2) Completely waterproof3) Commercial-grade wear ... layer4) Quiet under foot5) Dramatic different planks, with deep embossing and handscraped6) No heavy tools7) No expansion ... residential warranty waterproof pvc tiles vinyl floor with click system