The Slate Series is a color body porcelain that is produced to emulate a natural slate. The unbelievable similarities between this product and actual slate were made possible due to new, digital, inkjet technology. First, a search was conducted to find the best pieces of slate. Second, each and every piece was digitally scanned. Next, all of those images were blended together to create the perfect balance, which resulted in numerous faces/patterns. These faces were then used to print onto the surface of the tile, using the same type of digital/inkjet technology that is used when printing onto paper from your computer. Because this material is a porcelain product, minimal maintenance is required, while sharing similar, beautiful visual characteristics of a natural stone. It is available in three rich, earthy hues, each of which provides high tonal contrasts between pieces, imitating the exceptional qualities of stone. When installing rectangular tiles 18 inches or longer with a staggered joint, it is recommended that the offset not exceed 33%. There will be noticeable variations in color and movement between pieces. Therefore, it is important and recommended that a range of this product be viewed before finalizing a purchase. To achieve the best range of color, it is recommended to mix tiles from several boxes at a time during installation. When mixing sizes within a series, shade, texture and calibration differences should be expected. Slate is available in two sizes with a surface bullnose.