Characteristics: It comprises of a axial fan, a protective housing on the front and rear surfaces and filter designed to retain dust particles. The filters that equip the fans must be cleaned and replaced regularly. This filter can be replaced during operation without risk of touch with the rotating part. Material of filter pad: 100g/ M3 nylon fiber compound, Filtration efficiency up to 7 3%. Operation Temperature/Humidity Range: (under unconcretionary state) -20ºC ~ +70ºC (temperature), 0% ~ 95% (himidity) RAL 7035 grey is the standard offer with the possibility to change to RAL 7032 by means of a replacement grille. Bear in mind the pressure losses caused by the outlet element (grille with filter, ventilation louvre or simple opening) when determining the fan flow rate. Protection class: E N 60 5 29 I P 5 4 (not suitable for outdoor equipment).