The 1st generation Pfannenberg Filterfan^® combines robustness with effectiveness. Built in a metal housing, they were either mounted on the roof or on the side of the control cabinet. A filter cloth prevented dust particles from reaching the inside of the enclosure with the airflow.

The 2nd generation Pfannenberg Filterfan^® was made of a self-extinguishing plastic. Further innovations: Installation and maintenance became significantly easier with this model. The hole pattern allowed quick visual detection of a clogged filter mat while special air inlets prevented excessive dust build-up.

The 3rd generation Pfannenberg Filterfan^® saw another improvement in performance and efficiency. This was a precursor to today's fin design. For the first time, a patented folding mechanism allowed for the replacement of 2 different sized filter mats, in just a matter of seconds.

The 4th generation Pfannenberg Filterfan^® our Filterfan 4.0™ sets a new standard in Filterfan^® design. Installs faster with our new 4-corner fastening system, produces maximum airflow with optimised fins and rotor blades and achieves a 300 % longer service life with our fluted filter mat.