Looking to get a dog box built and trying to figure which is the best quality box. If anyone has had experience with both please replay to posting.

Glens quality is absolutely phenomenal. I rolled my truck and only caused one small bend or corner of roof on my cab high. When I got new truck, they even adjusted it for me so I didn't have to buy a new box too. I hope this helps.

Glenn is just too high $. Look up Ashley welding ( Byrd ) guy builds and Welds Towers on fishing boats. Everything is welded only thing riveted is a latches and hinges. Boxes are little different style-wise. I'd say look at the two and decide which style box you like. I think Byrd has a better weld job and cost a little less. I own neither style by the way.