Triangular comb, kind of an interesting configuration. In the beginning of the video you will hear a couple of thuds. At first I thought this was a few comb sections falling as I removed the interior paneling but shortly afterwards realized a few comb sections had fallen some time ago. The noise I reckon came from behind me. Likely the customer's son knocking over a box fan on his way out of the room. This morning I set these gals up and saw the queen for a fleeting second as she quickly scurried down between the frames. Nice, easy removal, even nicer bees. You have to love that!