Agreed...someone had a nice chart of all the box manufacturers with all the width dimensions....since I started with ML 9 5/8, all my boxes that I make are also 9 5/8" just to keep a standard in my own apiary....ran into trouble with a candy board from Brushy mountain I think that was made for a smaller 5 frame nuc box ...was too small for my 5 frame ML boxes...ended up getting water in there from snow/rain and was a mess to clean up along with a big loss of bees from that colony....live and learn.Ron,
There is no etched in stone dimension for 5 frame wooden nuc boxes. I purchase mine from Shastina and they are 9-1/8" x 9-5/8" x 19-7/8". The 9-1/8" width for me anyways leaves plenty of room to insert queen cages etc. Mann Lake makes theirs 9-5/8" wide and that for me is too wide. You can almost squeeze in 6 frames into their boxes. I don't recall exactly how Dadant cuts their 5 frame boxes. I'm sure someone else will chime in.
Typical inside dimensions of ANY box should be (# of frames * side bar width) + 1". If you use 1.375" self-spacing sidebar frames then 5 frame nuc inside dimensions would be 7 7/8" so the outside dimension with 3/4" thick lumber would be 9 3/8".what is the standard size for 5 frame nucs?