This product has been confirmed to be in working order. The filter cover on the back of the main unit tends to fall off easily due to impact, etc. Dainichi Plus Hybrid Humidifier HD-LX1020 Moss Gray (H) ■Model Number HD-LX1020 ■Color Moss Gray (H) ■Applicable Floor Area Prefabricated Western-style room: Up to 27 tatami mats (44m²) Wooden Japanese-style room: Up to 16 tatami mats (27m²) Please refrain from purchasing if you are sensitive to used items, as this is a USED item. 5120507 E12