Sundström Basic Kit SR900 with 217 Filter Medium (Each)Kit includes: 1 x SR900 Half Mask TPE Medium 1 x SR217 A1 Gas Filter 1 x SR510 P3 Particle Filter 5 x SR221 Pre Filters Storage Container All in one handy pack 24 units per carton Always at the ready! Store your respirator, filters and accessories in a sturdy plastic kit with carry handle. Comes pre packed with all you need for a safe job. IN THE BOX SR900 respirator P3 particle filter ABE1 gas filter Pre filters OTHER ITEMS Filter cover Cleaning