Description The 3M 4000 Series is a range of ready-to-use, maintenance-free half-face masks designed for effective and comfortable protection against a combination of gases, vapours and particulate hazards found throughout the industry. Maintenance-free design for maximum safety and simplicity No maintenance records are required if disposed of within one month Replace after 28 days or when damaged, breathing resistance increases or breakthrough occurs, whichever occurs first 2 large bonded carbon filters for low breathing resistance Low-profile design for better peripheral vision Low resistance parabolic valve to reduce heat build-up Soft/Non-allergenic facepiece material Lightweight and well-balanced design Cradle head harness Easy to fasten neck strap Standard: EN405:2001 Approval: CE marked 3M 4255 Organic Vapour and Particulate Respirator: FFA1P2 R D Gases/Vapours :10xWEL or 1000ppm whichever is lower;
