FISH S2 two coil solar heaters are manufactured in capacities from 150 to 1500 l. The long life of the tanks ensures a proper corrosion protection in the form of a layer of enamel and a magnesium anode.

Tanks with a capacity to 500l are insulated with polyurethane foam - 50mm thickness, from 750l with soft polyurethane foam - 100mm thickness.