Bison Glass Floor Tile, 12" x 12" x .1875", White Backed Textured Tempered Glass. Suitable for dry applications. Indoor use only.These tiles are the first dye-sublimation tiles to meet and exceed ASTM tests set forth by ANSI standards for commercial and residential applications. Images are applied to the backside of the glass.These tiles may not be used in any exterior application. Tempered glass tiles cannot be cut, so for applications where cutting is necessary (corners, holes, etc. in floor installations), you would use non-tempered tile. For 12"� tile installations, you would want to use the tempered tiles except where cutting is needed. Image the non-tempered tile prior to cutting, as pre-cut tile may fracture during pressing. The non-tempered tile may be cut with a glass cutter, or a tile saw (wet saw application, diamond blade). Use a non sand grout specifically formulated for use with glass tile.