Smartpool System Kit for Solar Heating System for in-ground Pools (to Install as much as 4-S601 Boxes) (SK21).
Install and operate your sunheater solar pool heater with the smartpool sunheater systems kit
Setup kit can be utilized with as much as four boxes of sunheater in-ground pool solar warmers
Pool accessory kit incorporates the whole lot you want to finish the installation
Includes all essential valves and mounting hardware
Includes all parts had to set up your 4 warmers, 3 method valve, check valve both included