Allows you to leave your rear doors open while keeping the bugs out. Zipper allows access while installed. Stores compactly and installs easily with velcro around perimeter of the rear doors. Packaging says it fits 1992-current Ford Econoline.
Bought new from Sportsmobile ($290), but never installed. Asking half price ($145) or best offer plus $10 shipping (free pickup in San Diego).
Photos of my screen and the instructions: