I don’t remember the gauge but the side rails are 2x4 inch and the cross members are 2x2 inch.
I told the weld shop what I was doing and he selected the gauge. I have stood and walked around on it and I’m 330lbs and it didn’t budge a bit.
The top is treated plywood that has premium deck-over paint. I was going to use diamond plate aluminum but at $400 a sheet I said no thanks lol
