Innovation in keeping with tradition. This classically styled System 1 Whirlpool features 6 fully adjustable jets powered by a 1.5 HP single-speed pump/motor for an invigorating massage. Includes a deck-mounted On/Off control plus 2 silent air-volume controls. Americast® is our proprietary, revolutionary alternative to cast iron that's more durable, 50% lighter and costs less to install. Thanks to inherent manufacturing advantages, Americast® bathtubs can be made deeper, flatter and roomier than their cast iron counterparts.