https://www.cosyleader.com/products/4mm-spc-flooring/ 4.0mm SPC Flooring The 4.0mm thick planks consists of 3.7mm hybrid stone composite core with 0.3mm wear layer. Realistic Timber Visuals, On-Trend Colors and Textures with Water-Bassed Matte Coating. 25 Years Limited Structural Warranty. 20 Years Limited Residential Wear Warranty. 5 Years Limited Commercial Warranty.