Cobalt Slate 8mm + 2mm Preattached Underlayment Thick x 11-9/16 in. Wide x 46-5/16 in. Long plank features an interplank design and slip resistant, embossed in register texture that work in concert to mimic the natural, beautiful appearance of genuine slate. This laminate flooring is supplied with an attached 2mm noise-reducing foam underlayment for easy installation and may be installed above, below or on grade over concrete and hardwood subfloors. It also features the convenience of floating-click installation and MicroBevel edges.