What is the mesh size for insect screen mesh？
Mesh size usually means the hole quantities of one inch(25.4mm) size in the mesh product industry.
The bigger mesh size is, the holes will be more in quantity per inch, and the product shows more density.
The smaller mesh size is, the holes will be less in quantity per inch, and the product shows more sparse.
For example, 18x16 mesh means there are 18 holes in warp, 16 holes in weft per inch(25.4mm), which is a little bit more dense than 17x15 mesh.