fiberglass screen color: grey,black, yellow, blue,etc opening:18*16,18*14,16*16, ... ,20x20 mesh/inch,20x18 mesh/inch2.Color of giberglass mesh screen: black color, gray color, gray &white color, green color, etc.raw material: fiberglass yarn3.Length ... safe to use, and good sealing effect.wide range. Corrosion-resistant, high strength, anti-aging, fireproof, needless to paint coloring.non ...