The ChlorMaker Model was designed to be used in Spas and Hot Tubs, by simply draping the salt-cell over the side.   There is no installation required.  Add the recommended amount of salt, connect the salt cell to the power supply and Drape-Over the side.  Set the controller and you're making chlorine.  The ChlorMaker model is basically identical to the SmarterSpa model, except that it does not include the Chlorine Detection Technology.  Salt chlorine generators are a better way to do chlorine!