Smartpool WWS425P  Sunheater for AG Pools with Diverter Valve Kit Keep your pool warm with a polypropylene heat collector, solar heater features two threaded-elbow adapters Pool accessory has four end caps, four stainless steel hose clamps, one roll of Teflon tape, one rubber connector hose, includes bonus Solar Pill Trilingual installation/operation manual (English/French/Spanish) Ordering Guide for Round Pools, 15 to 24 feet: One box, 27 to 28 feet: Two boxes Ordering Guide for Oval Pools, 12 to 24 feet: One box, 16 to 25 feet: Two boxes