The company that manufactures the F R P is called Fiber Tech. The web site is they make the panels in different widths and are 48 ft. long. I bought the panels from a friend that owns a trailer fab business. I had the guys cut the panels to rough size and I trimed with router and carbide bit. Panels are very strong you can kick without damage. I built a 20 ft inclosed trailer back in 2000 out of the same material and is still going strong with no problems. Thanks For All the kind words. overkill