Just reviewed a fresh video from a channel I watch.
Posted February 9, 2019.
This is near Nikolaev, Ukraine (about Zone 6 US).
A very good side-by-side set of wintering in foam hives vs. wintering in wooden hives.
Single deep Dadants (GV: corrected from Langs - I just visually determined this; the Dadants just seems more reasonable).
Vented via the bottoms.
From the start, the author demonstrates a sample of foam hives in a sequence.
Starting 5.35 - he does a sequence of compatible wooden hives.
Might as well turn off that non-Engish audio and watch in silence to help you to focus on what is in front of you.
I will not comment/translate not to spoil the show since it is ALL in front of you.
First - a batch of foam hives until 5:35.
Then - a batch of wooden hives.