sunCOIL - Solar Heater for Above Ground Pools with FREE Diverter Valve Kit ($49.00 value) Ideal for above ground pools and soft sided Intex style pools; For larger pools or more heat more than one sunCOIL may easily be installed FREE CONNECTION KIT and DIVERTER VALVE KIT (controls proper water flow through dome & allows water to bypass dome during pool vacuuming) Clear Dome (performs like car windows in summer) and Black Coil help absorb sun's heat energy to transfer to your pool water Folding Legs allow you to angle the sunCOIL toward the sun for best heating results 5 year Warranty