The City View Slate Series from the Daltile Liberty Collection is a pressed, PEI 4 rated glazed porcelain tile which is available in three decorative colors. Because this is a glazed porcelain tile, they are extremely hard and impermeable which makes the tiles resistant to moisture, staining and wear. Aside from its durable nature and stylish characteristics, these tiles are also PTCA Certified. This means that these tiles have all met the U.S. standards for porcelain, protecting you from foreign imports that may be inferior to the product you have specifically chosen. The City View Slate Series is an incredibly durable, stain-resistant, easy cleaning porcelain tile suitable for applications ranging from residential to commercial installations.