Used in top bar hive queen rearing system. I cut them up and inserted them into follower boards, cheapest option for what I wanted to achieve.
I ordered replacement excluders as the originals did not sit well against the internal corners. The new ones have had their orientation changed and I cannot fit them flat, and side by side on the top of the brood frames, one has to sit over the edge of the other creating a slight gap which the bees will fill with propolis.
Will work nicely in my non-beehaus hive for my cunning plan for a Queen Includer! ;-)