Pfannenberg replacement filter mats provide safety against overheating, short circuits, and fire, and are essential for daily operations. They prevent unplanned downtime and associated costs. The filter mats, in combination with Pfannenberg's patented filter fans, ensure the desired protection class IP54. Pfannenberg's fleece filter mats have the highest filter class according to DIN EN 779 and are the perfect filter medium for the majority of applications. The illustrated 5-pack is suitable for the original Pfannenberg filter fans and outlet filters of size 1 (PF1x and PFA1x).