The Americh ROC Solid Surface Shower Bases are a remarkable addition to the existing ROC collection. These shower bases are constructed with a mineral-cast material which utilize the finest natural and organic components combined with specialized agents. The result is a natural stone, solid surface product that exudes both durability, artistry and beauty. The ROC Collection shower bases are designed with a sleek, low profile clean edge, giving you that stark, modern look. All ROC shower bases are made in the USA. Sizes offered in 3232, 3636, 3838, 4242 and 4848.