comes in sheets and different sizes and thickness of different colors. look for pre painted aluminum sheets in your area. they use it for signs and race car body's. i used .040 4x8 sheet gloss black. rear pc is 8ft long, front pc is 4ft long over lapped 1 inch. that way i can remove 4ft front pc if need to access frt jack. used 3/16 multi grip large head black rivets to hold in place. just drill out rivet to remove if need be.