Sun2Solar Ground Mounted Heating Solar Panel System for Above Ground & Inground Swimming Pools | Hardware Included | 4-Foot-by-20-Foot FREE HEAT FOR YOUR POOL! - Our system is designed to be used on above-ground or in-ground pools. Each kit is made of two - 2' x 20' panels (4' x 20' total). Each panel is made of lightweight, flexible, durable black polyolefin. The panel's tube construction creates a larger surface area which optimizes heat transfer from the sun to your pool. BENEFICIAL FOR SWIMMING SEASON - Install the panels yourself or have it done by a professional. With enough sunlight and warm temperature, you will see an increase in pool water temperature. The use of a solar cover is recommended for maximum efficiency. Your pools pump and filter system circulates pool water through the solar panels when it is heated and then returned to your pool. You can add extra panels if needed. FOR THE GROUND - It is recommended that you do not use a high horsepower pump as you can blow out the lines. For the panels to be most effective on the ground, be sure that they are angled at 45 degrees to the sun for maximum heat collection. All you need are a few straps (sold separately) to secure them to a solar panel rack or ground. The by-pass valve (included) will allow you to dial in the flow rate and send the water around the solar panels. ECO FRIENDLY - Your pools pump and filter system circulates pool water through the solar panels when it is heated and then returned to your pool. You can add extra panels if needed. Once installed, these panels are cost effective, produce no greenhouse gases, and need low to no maintenance. Extend your swimming this year at a low cost with the help from the sun! INCLUDED WITH THIS SYSTEM  Two 2 x 20' panels and by-pass valve. Connect multiple panels with the rubber hose connector. 5 year limited warranty.