3M 501, Pre-Filter, For Use With 5000 series particulate filters/5911, 5925, & 5935 filters/6000 series gas & vapour filters/603 filter adapter 7100066103 | Cromwell Tools
3M™ Partikel Einlegefilter 5911, P1 R, Kompatibel zu 3M™ 501 Filterdeckel, Einlegefilter gegen feste & flüssige Partikel