The Special-Lite Fiberglass Reinforced Polyester (FRP) Panel SL-37 is the perfect match for our FRP Flush Door SL-17. Like the SL-17, it can stand up to the most demanding applications imaginable. Featuring our exclusive, .120" (3mm) thick, through-colored SpecLite3® pebblegrain FRP, it provides exceptional resistance to impact, scratches, stains, and fading. The SL-37 can also be ordered with painted pebblegrain or smooth finish FRP face sheets if the potential for abuse and vandalism is more limited.