GAME UNIVERSAL POOL SOLAR HEATER - 4512 Extend the length of your swim season by naturally heating your pool using the sun's radiant energy. Cost effective Easy to install No wires or utility connections Low profile, maintenance-free unit Can increase pool water temperature up to 5 degrees in 2 days! ONLY USE WITH INTEX STYLE PUMP / FILTER COMBO UNITS OR WITH ABOVEGROUND PUMPS OF UNDER 1HP...