This compact and efficient Balboa Corona Discharge ozonator is suitable for spas up to 3500 litres in volume. It is quick and easy to install in your ozone-ready hot tub, or as a replacement ozonator for older, outdated UV models. It comes with a 4-pin AMP connector (adaptors for mini J&J plugs are available), air tubing and a check valve. The body of the ozonator measures 127 x 162 x 68 mm. It produces 75 mg of ozone per hour.