For use with the Moldex 7000, 8000 or 9000 series respirators, the Moldex 8970 R95 particulate pre-filter is easy to combine with any gas/vapor cartridge. All you need is the 7020 filter retainer and you can create the combination that will meet your safety needs. The R95 filter is NIOSH certified to be 95% efficient against both oil and non-oil based particulates. Ideal for welding, soldering and brazing, grinding, sanding, sweeping, bagging, stone quarrying, metal machining, cement, underground mining, and more. This pre-filter is also low profile making the field of vision wider.