Forget the cold as the Solar Bear extends your swim season by heating your pool to a warm, comfortable temperature from Spring through Fall. Solar Bear panels are attractive and lightweight and can be set up anywhere your pool is. They start heating immediately with free energy from the sun. This kit includes (2) 3' 9" x 20' 2" panel, a starter kit and an add-on kit. The starter kit includes (2) PVC elbows, (1) Teflon tape and (2) PVC plugs. The add-on kit includes (1) 3-1/2" coupler, (2) PVC plugs and (2) stainless steel hose clamps.