... 2.activated carbon mask 3.2-ply, 3-ply, 4-ply 4.excellent service 5.high quality Any of the following types ... melt-blown fabric, hypoallergenic, fiberglass free, latex free, fluid resistant with enclosed padded nose piece, high filtration.Packaging: dispenser box of ... 50 masks, 40 boxes per master carton Face Mask with high quality for cleanroom