The perfect addition to your water fed pole! You want your windows and solar panel to be clean and spot free, but if you live in an area with hard water, that is difficult to do. An easy, quick solution, is to add an inline filter between your water source and the silicone hose that filters and traps the particulates that cause those annoying water spots. This set comes with two filters, each with an average lifespane of 1,350 gallons of water (this will vary depending on the amount of sedimant filtered), and a hose protector that allows you to connect the filter directly to your spigot.