The beginnings of a better shower. Not only are acrylic bases warmer to the touch than other options, we reinforce ours with fiberglass to make them stronger. Match one of these square, single-threshold, high-gloss acrylic shower bases with an alcove shower wall set and door to create a shower that suits both your wants and needs.Lay the foundation for a perfect shower with the help of American Standard’s shower bases. Our shower bases are available in a variety of sizes and styles to suit any bathroom.  Acrylic with fiberglass reinforcement Single threshold unit Textured bottom pattern Integral self-leveling base Integral three-sided, double tiling edge with water retention flange Molded-in flood guard PVC shower drain with stainless steel drain plate Available in a variety of sizes