OX-ON Filter set Comfort A2/P3 is a specially developed and safety approved filter for you, who need to protect your airways in connection with working with paints, varnishes and solvents - including cellulose thinners, PCB, various types of wood preservatives, pesticides, turpentine and spray paint. (You may read more under point 8 in the data sheet for the product, against which you need to protect yourself). The OX-ON filter also provides protection when working in dust and particle-filled environments. Comfort A2/P3 is dolomite tested, which means that this is a filter with a particularly large dust capacity with slowly increasing resistance. The filter set is with screw thread, which makes it extremely easy and quickly for you to mount. The OX-ON Filter box w/2 sets Comfort A2/P3 consists of 2 sets of filters, which are used in conjunction with your OX-ON half mask.