Centura lists Adrock Nickel in the Adrock range: a 12" x 24" porcelain tile. The surface is a natural finish, left close to how the tile leaves the press. A 12" x 24" tile lays up quickly and leaves less grout to keep clean. It is approved for floor and wall installation, so wall and floor areas of the same room can be tiled from one order. One box contains 7 pieces, enough for 13.81 sq ft, or 1.9729 sq ft a piece.