Well, its like this. When I bought my bees, they were 3 established hives, 1 deep brood box and shallow supers per hive. I got a total of about 30 shallow supers, they were the 5 3/4 or 5 11/16 in. They were not all in good repair, but have been cleaning and repainting them. That is the one reason I like them, they are lighter than mediums or deeps to handle. With a couple of bad disk in back and have had a heart attack not much strain. I wouldn't want to steal your thread, but why don't the boxs come in sizes that are closer to board size. Say shallow out of a 1 x 6, med out of 1 x 8, and deep out of a 1 x10. The sizes now shallow and med cut out of a 1x8 and the deep out of a 1 x 12. I have been thinking about making a med out of 1x8, cutting side bar of frames longer by appr.3/4 in, a deeper med. Good luck with your quest.