The mechanical oil mist filter HOFM from HERR has a modular design that is easy to install, even on other systems. The mechanical system HOFM is very robust and can withstand the most adverse conditions. To meet customer requirements, the built-in fan is very quiet. The vibrations and noises are so small that direct mounting on other devices (eg CNC grinding machines) is possible. According to different operating conditions, the filter configuration can be modified to control various types of smoke, adjust the airflow, and control the speed of the fan. Modifications to the operating conditions can be solved by simple modifications to the internal cartridge filters.