There are 7 panels
They each measure 2’W x 20’L
Black plastic heats up water
Connects together with standard pool tubing(included)
You can lay on the ground in the sun or you can put them on your roof
We used these for our freestanding 12 x 24 doughboy pool. They hooked together with the tubing you see and then goes directly into your pumping system.
Cold water comes out from the pool through the panels and heat up and then back into the pool. They run in conjunction with your pool filter.