The veneer that I got from joewoodworker.com mikes out at 0.022". This is for both the quilted maple in front, and the birdseye maple backer. It is a good idea to use a backer (on the back face of the panel) as the new veneer on the front side, alone, will bow the panel, making it more difficult to fit. This does mean, however, that you have to remove a layer from the back, too.