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Face Mask Respirator Masks - 9004 Cool With Valve
It is composed with three layers of filter. the outmost layer filters out the largest dust particles, the inner most layer maintains the respirator shape and the middle layer is composed of electrostatic filter media.
the ability of this mask is to filter above 90% of 0.3 micro particulate dust. This 3M mask is used as a disposable face mask for respiratory protection agianst fine dust particles. 3M 9004 has cup shaped design and comes with aluminum nose clip & neoprene elastic band for comfortable fitting on every face.