Thejet plus filter are used at firstly flour, semolina and feed mills also food, chemical, wood processing, metallic, soil and cement industries as general environmental protection. The filters throw clean air through chimney after separation from the dust. The dust is stopped by clothes (bag). First cleaning process is done inside of the body of filter. As centrifugal action the dust particles are held on to the cloth bags and after pulsing it fell down into the cone of filter. The filltration air is sent by aspiration pressure to chimney. Cleaned air is thrown to atmosphere.