Whirlpool System type 5 A pure air-pool system generates loads of little bubbles With the Type 5 system, your favourite bathtub has a pure air pool massage system with 16 air jets in the base of the bathtub. Air is blown in via the blower, then heated. This preheated air is transported through the 16 air jets in the base of the bathtub, providing a gentle full body massage whilst also stimulating the circulation. This system is controlled by an electronic button that is recessed in the edge of the bathtub. The optional interval control provides a pulsating massage effect. The air-pool system is fully installed in your desired bathtub and is then immediately ready for connection. A drain set and overflow set also comes with this whirlpool system. The arrangement of jets, nozzles, and operating elements depends on the model. As soon as the whirlpool is built in, then an inspection opening must be provided in the aggregate when installing the whirlpool.