Product Specification 3M 4251 Maintenance Free Gas/Vapour and Particulate Respirator 3M™ Maintenance Free Half Mask 4251 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 • FFA1P2 R D protects against organic vapours, with a boiling point greater than 65 °C, up to 10 x Workplace Exposure Limit (WEL) or 1000 ppm (whichever is lower), and 10 x WEL for particulates • Includes a resealable bag for hygienic storage and transportation • EN 405:2001 A1:2009
