Helix Skimmer Blockage PlateThis product was designed with easy maintenance in mind! If you ever need to service your pump inside your Helix Skimmer you can place you blockage plate in the mouth of your skimmer. This allows you to drain the majority of water out of your Helix Skimmer without lowering your pond level. You will never have to be shoulder deep in water servicing your pump again! Call 909 794 5217 for more questions