Shatex Roll Fiberglass Screen, Fiberglass Door Window Screen, 36"x50ft Fiberglass mesh screen, will not crease, dent or unravel,Charcoal Holds to weather elements, long time preformance Easy to install and care, ideal material to make, replace and repair door window and other screen Come in roll, and can cut into custom size Charcoal Black Color, 36"x50ft, Mesh Hole size 1mmx1mm, about 625holes/sq.inch, keep mosquito and tiny bugs out while allow air go through