NPT CON-1F 1-3/4" x 3-3/4" Tile Contour Glossy White - With regard to the durability of the bisque and glaze, this material is suitable for all vertical applications - residential and commercial, all interior walls, all countertop and floor applications. It is also suitable for fireplace hearth, fireplace surround and firebox, light commercial flooring applications. Works on all exterior wall applications including building facades, swimming pools, fountains and outdoor kitchens, including regions that experience extreme weather conditions, subject to the method of installation.