“3 M” HALF-FACE MASK WITH DOUBLE FILTER MOD. 4251

3M™ 4000+ Series Maintenance-Free Reusable Respirators are a family of respirators for immediate use with integrated cartridge and filters. The new valve reduces breathing resistance on exhalation and the soft, silicone-free facepiece provides a hypoallergenic face seal. Resealable pouch included, practical hygienic storage and transport case.

Effective, easy-to-use and maintenance-free respiratory protection with 3M™ 4000+ Series maintenance-free reusable respirators. The new valve reduces breathing resistance on exhalation for even greater comfort. The 4000+ Series Respirator features a soft textured, hypoallergenic, silicone-free facepiece and offers protection from gases, vapours and particulates. Lightweight, balanced construction with a central exhalation valve helps reduce heat build-up and ensures easier breathing, even at high temperatures. The integrated filters are maintenance-free: They are used until the replacement programme indicates that they need to be replaced or when the filters are clogged and therefore need to be disposed of. The adjustable harness makes it easily adaptable to different head shapes and sizes. The low-profile design favours wide peripheral vision and the two large activated charcoal filters ensure low breathing resistance. Available in four versions. Resealable bag included, practical hygienic storage and transport case. *Exhalation resistance of 3M™ 4000+ reduced to more than 30% for peak exhalation flows of 120 lpm and more than 35% for 160 lpm compared to the 4000 Series. Results measured by 3M in 2017 under laboratory conditions. Respiratory rates given as an example only.