I just bought a 2002 duramax with a 6.6 ft bed and it came with this topper which I have no use for. It is still in really good condition and the door opens and closes nicely, with two locking handles. It will stay on the truck until I sell it as I have nowhere to put it. $375 OBO I recently had to take it off to haul some furniture and it is relatively light and simple to remove ( and put back on) as myself and a friend were able to do it.