... cycle. Max. heating productivity: 20000kcal/h.Filtering systemPre-filter, ceiling filter, fibreglass filter, activated carbon filterRoof PlatesGalvanized steel platesControl systemSpraying, heat ... exchanger. Max. heating productivity: 100000 Kcal/h.Filter SystemPre-filter, high efficiency filter, exhaust fiberglass filter.Roof PlatesGalvanized steel platesControl SystemFan operation switch, lighting ...