Back Rack Half Louvered racks are made from the highest quality materials, and guarantee to deliver superior functionality and durability. Plus, they feature a nice, stylish design that will greatly enhance your vehicle's appearance. The Half Louvered racks install easily â no drilling is required. However, you may have to drill some holes if you want to mount a toolbox on the bedrail. Back Rack Half Louvered racks are compatible with some selected tonneau covers.