Dräger Coarse Dust Filter
This Dräger 990 coarse dust pre-filter is part of a range of quality filters. This filter has a Dräger specific connection Rd91 which makes it suitable for masks such as the X-plore 4390 and 4790, according to EN 143:2000 and EN14387.
The filter weighs 2 grams and comes in a pack of 50 pieces. The filters can also be used with the Combitox half mask.