The UNIPACK is a universal replacement spa control system. Heater assembly is 15″ long, it is mounted to the back of the enclosure. To simplify the replacement process, heater tube height is adjustable so it aligns to the existing plumbing. It is also detachable and can be plumbed with 3 feet from the control box. Longer cable length is also available. The UNIPACK can be built with the SmarTouch 1000 or 2000 controller , depending on the number of pumps installed in the spa.