... of fiber-glass under the process unifilar plastic-coating, plain weaving, and high temperature fixing. ... made of fiber-glass under the process unifilar plastic-coating, plain weaving, and high temperature fixing. ... porch, while permitting fresh airflow.Specifications: Standard (mesh /inch): 18*18, 16*16, 18 ... *16 Standard Color: black, grey. Standard Width (inch): 24, 30, 32, 36 ...