Worksport AL4 Tonneau Cover 4'5" Bed Model 4938140Worksport AL4 Tonneau Cover 4'5" Bed Model 4938140 Introducing the AL4, your Ultimate Flush Mounted Full Bed Access Aluminum Hard Cover a tonneau cover that seamlessly integrates with your truck bed, all without the need for a rail system. Experience a sleek and streamlined appearance coupled with unmatched protection and convenience. Crafted from a single piece of high quality aluminum using our precision automated machine, the exterior panel boasts