I think that is the table I got from Home Depot (actually was the 37" one). It is the correct height, but there is a gap over the slanted part between the back of the folded down seat and the top of the table. Easy enough to stuff a towel or something in there if you are sleeping on it though. The one I got is also just a little wider than half the width of the back, so leveling the entire back wouldn't work. Fit perfectly next to my Lifetime cooler though.

It is also a low friction surface, so I had to tie everything down that was on top of it (4 medium plano boxes) so it doesn't slide all over the place. I've only had it on one trip, so it was a bit of a trial run and I tent camped, so no first hand sleeping info. I'll figure a better way of securing cargo on top for next time tough.