3M Maintenance Free Reusable Respirators 4000+ Series are a range of simple and ready-to-use respirators with 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.

• A newly enhanced valve assembly helps to reduce exhalation breathing resistance for improved breathing comfort
• Lightweight, well-balanced design
• Integrated 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

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