>>...the old Dadant tall deep which I have used but I do not know of a single beek still using. Are there beeks on the list still using the size?

I know it's popular with a small percentage of beekeepers in Poland.  The most popular hive box in Poland is Wielkopolski though.  The Wielkopolski frames are taller and narrower than Langstroth's but the overall surface area is about the same.

The reason for the preference is that bees build-up quicker on taller frames.

Waldemar

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