Consists of: Nozzle faceplate, plastic housing, control box and pump 2.2 kW (3 HP) 230 V II 50 Hz. Countercurrent Swimming Equipment. The innovative design and concept venid the kit ( featuring dial, housing, control box and jet flor pump ) make it a element which will add significant value to your pool. A highly competitive product thanks to its top of the range hydraulic features, the Marlin Countercurrent System is available in 3 models, the Marlin II, the Marlin 30 III and the Marlin 45 III. Possibility of attaching grab rails to hydromassage hose (optional).