3M 7000128238 is a half facepiece reusable mask suitable for protection against mold and silicate hazards. It is not compatible with 3M PAPR Systems or the Supplied Air System, but it does offer enhanced comfort with a silicone faceseal and cool flow exhalation valve. The mask features a drop-down feature and is made of silicone and nylon. It has a medium mask size and a 4-point harness type. The primary material is silicone, and it offers gas and vapor protection for hydrogen fluoride, mercury vapor, chlorine, organic vapor, acid gas, ammonia, methylamine, and formaldehyde. It comes without a replaceable cartridge and weighs 0.8012 lb.