This is a TBH that I had to build as the swarm that I got three weeks ago was out growing their small one that I had put them in. It was only a 12 bar hive that I planned on using as a nuc. I had to build a four footer as these ladies were working hard. They are now on bar 10 in their new home and do not look like they are slowing down. These are bars 4 and 5.