Luverne RETRAC HighRise Folding Rear Entry Step (Fits 4" Bumper Beam) Model 409924LLUVERNE 409924L HighRise Folding Rear Semi Truck Steps with Auto Stow, Fits 4 Inch Bumper Beam, Steel, 600 lbs, Semi Trailers, Box Trucks Model 409924L The RETRAC HighRise folding rear entry step equips your semi trailer, box truck or flat deck with safer, easier access. It features an auto stowing design, a universal installation system, exceptional traction and a 600 pound capacity. Climbing into the back of your semi trailer or flatbed truck can be