Extend the reach of your Airmax Aeration System. Airmax EasySet 5/8" Direct Burial Airline is perfect for underground installations. The rigid wall design makes it highly resistant to deforming and crushing when buried in the ground from the aeration cabinet to the edge of the pond. Once at the edge of the pond the direct burial airline can be connected to EasySet Weight Airline using Connector Kits for an air-tight seal. Airlines can run up to 1,000 feet from diffuser plate to aeration cabinet when the power supply is not at the pond's edge.