This gray matte District Gray Porcelain Tile is 15 x 30. This tile has inkjet print quality, which produces a high definition image that thoroughly covers the tile and results in a natural, authentic look. Pressed tiles require more prominent grout lines, and the rounded edges allow for a smoother transition. PEI measures a tile's durability and ability to withstand foot traffic, on a scale of 1-5. This tile, rated at 3 PEI, can be used on all indoor wall applications, all interior countertop applications and all residential interior floors. This tile should not be used in commercial applications. Use contemporary ceramic and porcelain tiles for a classic feel and for durability. Whether you're looking for simple, clean designs or large format designs, these tiles offer long-lasting beauty that is versatile, affordable, and easy to maintain.