Mitsubishi Window Ventilation Fan E-20WH Ventilation Fan Stored unused. Has not been opened. Please note that the box has some damage. Quoted from the internet: Model number: E-20WH2 Exhaust type, antibacterial type. 20 cm blade diameter type. Antibacterial agent used on the main body and grill resin parts. Can be installed in either the left or right window. Window can be opened and closed freely. Suitable for wooden frame windows and aluminum sash windows. Antibacterial specifications (grill, orifice, back guard, pull cord knob)