Effective and comfortable protection against organic vapours, inorganic vapours, acid gases 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's 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 conditionsFFABE1P3 R D provides protection against organic vapours with a boiling point greater than 65 °C, inorganic vapours, and acid gases up to 10 x Workplace Exposure Limit (WEL) or 1000 ppm (whichever is lower), and 20 x WEL for particulates. Includes a resealable bag for hygienic storage and transportation3M™ Maintenance Free Half Mask 4277+ 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.