The panels have grid's in them, you run a pvc pipe from your filter where it goes back in the pool, in one side of the grid, it has a outlet on the other end that goes back to the pump so the water can go back to the pool, it heats up great.Go to www.poolgearplus.com item#E-178-025 or item#E-178-030


''JUST MY TWO CENT'S WORTH''

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hey thanks for the info mark i added that pool supply company to my fav. list. dd that post was funny i cant stop laughing, the goverment protecting me from myself. i might need a mandatory chesapeke bay water dog to. oh god i gotta go, i have severe hickups from laughing. talk to you guys soon. jeff