Features: 1) Material: polyester filament 2) Model number: 60-7, 60-8, 60-9, 60-10 3) Weight: 1 Features: 1) Material: polyester filament2) Model number: 60-7, 60-8, 60-9, 60-10 3) Weight: 125 - 440gsm4) Thickness: 0.27 - 0.78mm5) Permeability: 38 - 210 Polyester Filament Filter Cloth