1.window screen Standard (mesh/inch) : 18x16, 18x14, 14x14, 16x16, 16x14,18x18 2.window screen size : width: 0.61m, 0.71m, 0.80m, 1.0m to 2.8m ; 3.window screen Standard colors : white, black, gray, ash-colored, and coffee etc. (Specification can be made as customers' specific requirement.)