5.6 Closed Loop Glycol Kitset

To suit 5-6 person household, requires 300+ litre cylinder c/w coil. Everything you should need kitset including 2 high efficiency 5.6m² collector, flat to roof collector fixings, ESR21 controller,  pipework, fittings, pump, pressure relief valve and pipe insulation, expansion vessel and 5 litres of propylene glycol.