AREX 3M 9004V is a dirt masks composed of 3 layers of filters. The outermost layer filters out the most important mud debris, the innermost layer preserves the respirator’s form and the center layer consists of electrostatic filter out media. It has the facility of this respirator masks to filter out above ninety% of 0.three-micron particulate dusts. (Medical analysis has confirmed thatfor all mud debris sizes, 0.3 micron mud are probably the most tough to filter out successfully). This 3m masks is used as a disposable face masks for breathing coverage in opposition to positive mud debris. This is a bestselling Protection masks in 3m Protection merchandise line. 3M 9004V masks has cup form layout and springs with aluminum nostril clip & neoprene elastic band for comfy installing on each face. 3m 9004V isn’t a N95 masks and it’s not a respiring masks utilized in acid/alkaline/gasoline debris.