Adapt to greater depths of relaxation. This acrylic tub features an EverClean� Whirlpool System with 8 adjustable jets, 1.4 HP one-speed pump/motor, side-mounted On/Off control and 2 silent air-volume controls. Our EverClean antimicrobial additive protects pipes from mold, mildew and more. Requires a Deep Soak� Max Drain that allows 3" more water.Feel refreshed and energized with the calming yet invigorating massage found in our Everclean� whirlpools. Unique to only American Standard whirlpools, the patented EverClean antimicrobial additive is molded directly into the water circulation components to inhibit the growth of mold and mildew on the pipes. Combined with the therapeutic massage of the stylish, adjustable Clean Jets�, the EverClean whirlpool system is the ultimate in relaxation. Key Features & Innovations EverClean� Surface EverClean System & EverClean Surface. American Standard whirlpools and air baths come standard with our exclusive EverClean system. It's a system that helps keep itself clean longer. The system incorporates a permanent glaze additive right into the circulation piping to protect the pipes from mold, mildew, algae and fungus that could cause deterioration or staining of the pipes. On toilets the super smooth mirror like EverClean� surface is easier to keep clean, even after years of use. That means you spend less time cleaning and more time enjoying.