Charcoal Pencil 6 in. x 24 in. Ledger Panel features split face gray slate. The thin strips of slate give this traditional material a contemporary twist. Its suitable for a variety of projects, including backsplashes, accent walls, retaining walls, water features, and cladding of support beams. Whether its used indoors or out, Charcoal Pencil will bring out the best in your decor – and you can count on a streamlined installation process. MSIs Interlocking Z Feature helps join the pieces together and enhances their naturally random appearance. Note: Inspect all tiles before installation. Natural stone products inherently lack uniformity and are subject to variation in color, shade, finish, etc. It is recommended to blend tiles from different boxes when installing. Natural stones may be characterized by dry seams and pits that are often filled. The filling can work its way out and it may be necessary to refill these voids as part of a normal maintenance procedure. Achieving a seamless fit has never been easier. All natural stone products should be sealed with a penetrating sealer.