depth of spare tire well?

Can somebody here tell me the depth of my Demon spare tire well. I am installing a new bottom and cut the old one out without measuring the depth to get the new one at the right height? I am lap welding the seam and not butt welding. Hope I have it deep enough. Haven't welded yet, just did temp screws, but I think I cannot drop it much more. But before I get too far alond, I want to be sure I am close.