Clean, healthy comfort. EverClean® technology protects pipes from mold and mildew. A Deep Soak® Max Bathtub drain raises the water level by 3" for a deeper soaking experience. Features a form-fitted backrest and dual armrests for added comfort. Fiberglass-reinforced acrylic construction. Drop-in or alcove installation with an optional apron. American Standard whirlpools with EverClean® incorporate a patented antimicrobial additive molded directly into the water circulation piping to inhibit the growth of mold and mildew on the pipes. Bathing Pool Only.