Specification aperture mm thread diameter mm mesh width m reference weight kg/m2 mesh/inch yarn count 8 (twill weave) 2 1 2.375 0.8 0.5 2.5 8 (twill weave) 212.375 0.810 2.58 (twill weave) 22 2.475. .848 (twill weave) 222.20000524 0.94 0.55 0.6 2.57 20 (plain weave) 331.020.251.000 0.58720 (plain weave) 321.00.27. 38+0.0 0.846 25 (plain weave) 300.71.301.12530 (plain weave) 380.690.15/kloc-.