So far not bad. The quality is very good. The wind deflector design allows more complete and uniform contact of harmful particles and gases with the filter wool and activated carbon filter material, improving the efficiency of the filter element.
Pros
XF-180 REPLACEMENT PARTS: These primary filters are exact replacement parts for pre-filters for OMTech XF-180 series industrial fume extractors; For optimal filtering, only select original OMTech filters for your machine!