I have one in my garage. I can't measure the upper skin since it has a lip on it. The bottom has an inspection hole where I can get to an edge, but unfortunately it is outside in the dark and under other things. I'll try to remember to get to it tomorrow for you. If I don't please email me as I haven't been taking the time to check out this site due to other obligations. Al Kozeliski

CUSTOM DECALS and RESTORATIONS