MSA Advantage Respirator Cartridges Advantageline of particulate, chemical, and combination cartridges are lightweight, low profile performance. Cartridges fit both 200 LS Half Mask and 3000 Full-Facepiece Advantagerespirators. Comfortable, lightweight protection. Self-adjusting crown straps. Consists of a polyethylene shell and suspension system working together as a protection system Pack of 1