The 3M Maintenance Free Half Mask 4000 Series is a unique, simple and ready-to-use respirator with integrated cartridge and filters. Our half-face mask has a well-balanced, low-profile design and features a centrally-positioned exhalation valve. The close-fitting, non-silicone, textured face seal is soft and non-allergenic. Includes a resealable bag for hygienic storage and transportation.

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