3M 4277 Maintenance Free Organic/Inorganic Vapour, Acid Gases, and Combination Particulate Respirator3M™ 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.* 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’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 conditions* FFABE1P3 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 transportation* EN 405:2001:2009