... (Optional) Silver Painting Anion Humidifier Model No. MH-502 Functions&Features1.Automatically switches off when there is lack ... pieces per 40-feet HQ containerFILTER IN HUMIDIFIER MH 502 Silver Painting Anion Air Humidifier Verified Information This ... MH-401, MH-501, MH-402, MH-403, MH-502, MH-503, MH-505, MH-301, MH-404, MH ... MH-401, MH-501, MH-402, MH-403, MH-502, MH-503, MH-505, MH-601, MH-30 2011/ ...