Enviracaire EWM-211D Slant Fin Humidifier Independently laboratory tested - Kills up to 99.999% of mold, bacteria and spores Digital Controls - Two output settings. Adjustable Humidity Control Runs up to 24 hrs per filling. For Small to Medium Size Rooms Warranty: 3 Year Limited Warranty Unit dimensions: 15.75 x 9.25 x 12.50