... unifilar plastic-coating, plain weaving, and high temperature fixing. Window screenMesh /inch: 18*18, 16*16, 18*16 ... for all sorts of airy in salvation and preventing insect and mosquito, its widely used in construction, orchard ... as a porch, while permitting fresh airflow.Specifications: Standard (mesh /inch): 18*18, 16*16, 18*16 Standard ... our products are ISO 9001:2000 certified insect window screen