I have several 7 and 10 frame hives and really like these for their versatility-my Swiss Army Knife in the apiary. I use the 7 frame hives as my mating nucs and can combine them if a queen fails to get mated or if I have a weaker colony that needs a smaller space. I like these feeders and the ability to close a colony up easily and move it if needed. I am slowly incorporating more of these hives into my beekeeping operation.