Sport Rack roof cargo storage box (like Thule) - $40 (Derby)

Nice cargo box made by Sport Rack and often sold by Sears like this one.
I misplaced the lock key and the brackets to mount box to roof bars The key is easy buy online and I originally purchased simple U bolts from Home Depot for mounting but they’ve gone missing.
Could use a cleaning but it’s not too bad.
This is towards the smaller size but it’s great if you don’t need or want one the really big ones Only $40