Nice box but watch the fit.
The box is nice and I like the lock ability. But I would caution on the mounting. My 2013 silverado 2500 hd does not have the room under the bed lip in the fron of the bed to fit the brackets required. So I have the tonneau cover and the tonneaumate brackets both about 1 foot back from the front of the bed. And the diagrams did not show my arrangement with there own tonneau cover and the brackets have to be taken apart to get them to fit.