Swanstone R3442 Single Threshold Shower Floor, BoneVeritek is a compression-molded, composite material with no surface coating to chip or crack. Color runs throughout thickness of material. It is easy to clean and maintain, since it will not mold or mildew. Applications include shower walls, shower floors, laundry tubs and mop sinks. Available in several solid and aggregate colors. Swanstone R3442 Single Threshold Shower Floor, Bone Features: 34"D x 42"W Will not mold or mildew, no grout to clean.