The APG-U Spa Ozonator In.Link APG-U-03 is a pre-owned ozone generator designed for use in spa and hot tubs. This ozonator, manufactured by Delzone, is compatible with Gecko and Balboa brands and includes an AMP cord for easy installation. With dimensions of 5.5" in height and 2.3" in depth, this spa ozonator is an essential part for maintaining clean and fresh water in your outdoor living space.