SmartPool Universal Swimming Pool Solar Heating Add On Panel - 4 x 20 Feet NOTE: 4 x 20 foot panel comes as two 2 x 20 foot panels Universal solar panels can be used on in ground or above ground pools Universal Solar Heating Panels may raise pool temperature 6-10 degrees Direct Flow System with patented Web Design tube construction optimizes heat transfer from the sun to your pool Includes: Solar panel, end caps, pipe adapters and mounting kit