I just measured some frames yesterday as part of my own project with burr comb. Compared my Pierco plastic frames to some old wooden frames that came in the original nuc I started with in 1996 (yes, I keep stuff like that). The frames were virtually identical in shape and size. I did not see any difference in the top frames - same thickness.
Originally Posted by Michael Bush
Maybe they are different with other manufacturers, but with the Pierco, at least, they appear to be the same.
If you want to gather honey, don't kick over the beehive. - Dale Carnegie