... in filtering liquid and gas, sieving grain.5.SpecificationSpecifications of Square Wire MeshOpening & Wire gauge (BWG)Opening & Wire gauge ( ... BWG)4meshx 20#,21#,22#, 23#,24#,25#,26#,27#22meshx 30#,31#,32#,33#,34#,35 ... x 32#,33#,34#,35#,36# 10meshx 22#, 23#,24#,25#,26#,27#,28#,29#,30#,31#,32#30mesh ... x 32#,33#,34#,35#,36# 12meshx 23#,24#,25#,26#,27#,28#,29#,30#,31#,32#,33# ...