I recalculated the dimensions of the Dcoates nuc box to make and 8-frame medium nuc with a similar design. Passed the dimensions onto Robo who kindly made a cut sheet and plans. Internal volume is slightly larger than the 5-frame deep with a little extra comb area in the frames. I know there is quite a few people using all mediums including myself and needed a good medium nuc box that was inexpensive. Can still get 4 nucs out of a sheet of plywood.