FFU Pre-Filter M5 - 500x500 removes dust, larger particles and other foreign materials from the air, thereby extending the service life of FFU HEPA Filter H14 - 1200x600 (0.0.712.76).The Filter Fan Unit consists of a Housing, Pre-Filter and HEPA Filter. All these components are also available separately as spare parts.As explained in the user guide, the class M5 Pre-Filter is fitted to the top of the Filter Fan Unit. It is advisable to change the filter every 12 months.
