If you do not have the AZ size foundation, you can use wireless Langstroth Foundation. It will need to be cut 1" off the side and will leave a 3.4" gap across the top.
Janko Božič is a Professor of Biology at the University of Ljubljana, Slovenia. Dr. Božič teaches insect biology, comparative endocrinology, and beekeeping courses at the undergraduate and graduate level. He has studied honey bees' foraging, dance signals, and social grooming behavior, bees' actions to resist varro