1.Pvc Coated Glass Fiber Yarn Fiberglass window screen 2.Plain Weave 3.Mesh:20*20 18*14 18*16 4.Weight:85g 90g 120g 145g 5.Size:1x25M 1x30M Fiberglass screen is woven from PVC coated fiberglass yarn. It makes ideal material inindustrial and agricultural buildings to keep away fly, mosquito and smallinsects or for the purpose of ventilation. Fiberglass screen offers excellentproperties of fire resistance, corrosion resistance, heat resistance, easycleaning, good ventilation, high strength, stable structure, etc. Packing: each roll in a plastic bag, then in plastic woven bag or in cartons. http://www.walibuilding.com/page/fiberglassscreen.html Mesh Wire gauge Weight Type Color Roll size 18X14 BWG31/BWG32 115g Plain Weave Grey/Black 18X16 BWG31/BWG32 120g Plain Weave Grey/White 20X20 BWG31/BWG32 145g Plain Weave Grey/Black