I've looked at the supply mags I have nearby, or found in the piles on my desk. Kelley, Dadant, Mannlake, and Betterbee.
But I can not find a small one frame observation hive which would be used for presentations.
Anybody know who handles such a unit? One deep frame, handles, and easy to install.
I thought I had seen awhile ago, a small "Ulster" type one frame, but not sure from where.