I could be wrong, but I don't think you can buy 8 frame boxes here, but they use them in the States. Langstroth or Dadant, not National.
I dummy mine to 9 frames rather than using the full compliment of 10. Dummy board comes out at the beginning on an inspection, the frames get pushed close together as I move across the box and it goes back in at the other side. These are jumbo/Dadant frames.
I got caught out with the double mediums though because I put the top box's dummy frame in at the opposite side to the lower one and they filled both spaces with comb.
Does Ian Craig go up to 9 frames for the summer, and back to 8 again in the autumn?
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