The Oskar Big Evaporative Humidifier from Stadler Form can cope with a big area and maintain humidity at the desired level. A full 100 square metres in fact, which is enough for a whole apartment, or an entire storey of a decent sized house. The Oskar Big is still very economical to run, consuming a mere 8-32 watts of electricity, with output automatically controlled by its two speed fan and built in hygrostat. The elegant design of the Oskar Big will enhance any room with its understated presence. To humidify such a large area it, comes with 4 antibacterial eco friendly filter cassettes which guarantee germ-free operation and offer an output of up to 700g of moisture per hour. It operates quietly and unobtrusively and when you do need to fill the large 6 litre tank, this can be done without interrupting operation. As with the other Oskars, room fragrance can also be added.