Solar Bear Deluxe Above Ground Solar Heating System NS725 TOP-OF-THE-LINE SOLAR HEATER IS FREE TO OPERATE!Manufactured by the premier company in the solar business (they have installed over 125,000 solar systems), these panels have been efficiently heating swimming pools since 1972. Solar Bear’s surface is fully whetted by pool water insuring the most efficient panel available. Extra large 2” headers do not slow down your pool’s circulation and ensure excellent solar heat transfer to your pool’s water. Smaller 1-1/2” headers can reduce your pool’s circulation and cause solar heating to be compromised.Solar Bear systems are comprised of a single extra-large 4’x20’ collector with no couplings or connectors. The system is made of U.V. stabilized polyethylene that is very tough and will last many seasons under direct sunlight. The systems come complete with an integral bypass valve, so you can turn them on and off as needed. Included are two 6-ft. hoses and four clamps to hook the system up to your filtration system. Solar Bear panels can be mounted on the ground, on a rack, or a nearby roof. Complete installation and user’s manuals are included. 10-Year Warranty. Put solar to work in your pool and swim in a warmer pool without the huge expense of heating it. Note: For panels to heat optimally, they must receive unobstructed sunlight between 10 a.m. and 4 p.m.