Smooth surface,strong anti-abrasion,good air permeability,high strength, and remarkable filtration effect,etc TS-PA63821 Model No.Breaking Strength(N/5x20 cm)Breaking Elongation(%) Thickness(mm) Weight(g/m2) Air Permeability(200P)(L/m2*s)WarpWeftWarpWeft TS-PA63821 3684.6 1352.7 34.45 29.05 0.57 347.3 908 TS-PA63821 FILTER CLOTH