Breathing made easier.
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3M™ Maintenance-free Half Mask, 4000+ Series
Engineered for improved breathing ease, this evolution of 3M’s most popular maintenance-free reusable half mask is convenient to use, reassuringly reliable and now offers measurable improvements in comfort.
Over 30% reduction in exhalation breathing resistance* at higher work rates
* Exhalation breathing resistance of 3M™ 4000+ reduced by >30% for 120 lpm peak exhalation flow and >35 % for 160 lpm compared to 3M™ 4000 Series. Results measured by 3M in 2017 under laboratory conditions. Breathing rates shown as an example only
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