3M 4279+ Maintenance Free Organic Gas/Vapour and Combination Particulate Respirator 3M Maintenance Free Half Mask 4279+ is a simple and ready-to-use respirator with an integrated cartridge and filters. A newly enhanced valve assembly helps to reduce exhalation breathing resistance, and the close-fitting, non-silicone, textured face seal is soft and non-allergenic. Includes a resealable bag for hygienic storage and transportation. Effective and comfortable protection against organic vapour and hazardous particulates, A newly enhanced valve assembly helps to reduce exhalation breathing resistance for improved breathing comfort, Lightweight, well-balanced, low profile design, Integrated cartridge and filters mean It is ready to use and maintenance free, Soft, close-fitting face seal made with textured, non-allergenic material, Adjustable head cradle and easy to fasten neck straps, Centrally-positioned exhalation valve helps reduce heat and moisture build-up in hot and humid conditions, FFABEK1P3 R D provides protection against organic vapours with a boiling point greater than 65 C, inorganic and acid gases and ammonia up to 10 xWorkplace Exposure Limit (WEL) or 1000 ppm (whichever is lower), and 20 xWEL for particulates, Includes a resealable bag for hygienic storage and transportation, EN 405:2001+A1:2009.