... , N100, 91, 92,93, meet different clients demands to produce all kinds of respirator protection material.*Models and ParametersMask cloth --filter ... material for mask use ModelBasic Weight g/m2Thickness(mm)10.6L/Min.100cm2BFE>%ApplicationEfficiency ... 70 0.6 98.99 4.5 Hight efficiency medical use glassfiber cloth