Whirlpool System type 1 A small, but key step for rejuvenation. The Type 1 system means your favourite bath is equipped with an integrated Hydra Jet massage system with 6 adjustable jet nozzles arranged on the side of the bath, which provide a pleasant massage effect. This system is controlled by a pneumatic button that is recessed in the edge of the bathtub. The air regulator manages the intensity of the massage jet by mixing the air. Residual water draining takes place via the whirlpool pump and the system. The whirlpool system is fully installed in your desired bathtub and is 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.