Additional Details ------------------------------ Product description: The air-purifying device Salin S2 , a world-wide newness in this field, is dedicated to the discrete and permanent treatment of the air by the forced passing of the air through a filter with sediment layers of micro-crystallized salt. SALIN S2 ensures air treatment in a space with a volume of 35-40 cubic meters (a room of up to 15 square meters); For larger rooms you can use Salin Plus Salt Therapy Air Purifier.