ABOVE GROUND POOL SOLAR HEATER – Inexpensive and easy to install. The most affordable solar heater for smaller above ground pools COST EFFECTIVE – Heats efficiently using the sun’s Free Energy EASY HOOK UP – No electric or gas connections needed. Approved for use with any cartridge or sand filter up to 1/2 HP or filter systems with flow rates less than 2500 gallons/hour MADE OF HEAVY DUTY MATERIAL – 3.25′ L x 3.25′ W x 3′ H (filled). 10 square feet of surface. Constructed of 30 mil heavy duty UV stabilized PVC INCLUDES – Adapters for INTEX pools and extra hose & fittings for above ground pools. Once your pool season is over, the solar heater folds for easy compact winter storage