Advantage line of particulate, chemical, and combination cartridges are lightweight, low profile performance. Cartridges fit both 200 LS Half Mask and 3000 Full-Facepiece Advantage respirators. Comfortable, lightweight protection. Self-adjusting crown straps. Consists of a polyethylene shell and suspension system working together as a protection system. Also fits 420 Half-Mask Respirators and 1000, 3000 and 4000 Full-MAsk Respirators.