Totally Free Energy Free sun powered heating and free sun powered electricity for the pump. Keep those dangerous extension leads and mains powered electricity well away from the water. Safe solar panel output voltage. Kit Contents - 3 X EPDM/ NBR tough rubber mat, UPVC resistant, dimensions 66 cm wide, 150 cm long with manifold pipes. (additional mats can be purchased from us separately) 1 X Lowenergie 20W Solar Electricity Panel, 18 volt DC output, 1.12A, 20w(360x540x25mm), connects directly to the pump 1pc 12-24v Solar Water pump with 32mm (1.25 inch) pool pipe connectors, 420 Litres per hour circulation rate through the Solar collector which is sufficient. 2pcs, water intake & output pipe connections which will fit a standard 32mm pool hose 6pcs, metal jubilee clips to ensure tight pipe connections 1 Roll PTFE Tape for enabling good watertight pipe connections 2pcs, manifold connection pipes to enable multiple heating mats to be joined together for increased heat generation used