RaceQuip Ribbon Window Nets are constructed of heavy-duty 1" polypropylene webbing and nylon thread for maximum durability. For over a decade, we have utilized jig-built construction techniques which ensure consistent size, shape, and fit. Available in black, red, blue, yellow, orange and purple. Our standard size is 18"x24" which will fit most window openings. Five new sizes now available. All meet or exceed SFI 27.1 specifications.