Unglazed White porcelain mosaic is a non-glazed porcelain tile, suitable for areas exposed to potentially slippery conditions such as shower floors, entrances, bathroom floors and countertop surfaces. Both practical and elegant, it is available in stock for immediate delivery.-P.E.I. Rating IV has high resistance to abrasion and suitable for heavy duty floors, both residential and commercial installations such as entrances, commercial kitchens, hotels, exhibition and sales room with some dirt conditions. -Impervious flooring has water absorption of less than 0.5% for indoor use and is frost proof. -C.O.F. greater than .60 to .79 is required for commercial applications to meet or exceed ADA (Americans with Disabilities Act) Guidelines. Skid Resistant. Indoor and outdoor use. -Completely frost resistant for Indoor or Outdoor applications. Use a latex modified thinset for acceptable bond strength. -Residential and commercial use.