WPC 100% WaterPROOF - Cornerstone Premium XL Collection - Overall Thickness: 8.5mm (CORK BACKING ATTACHED) - Sku#: etc750 - Color: Portola - Box Size: 26.59sf. - Wear Layer: 20MIL - Nominal Plank Size: 72" x 8 7/8" - 5G VALINGE DROP CLICK SYSTEM