Caught a nice swarm in a winebox bait box, and made a new one. They come in different lengths and sizes from different wineries. On the 21" long ones you have to add a 3/4" board to each inside end for frame rests, on the 19" +/- boxes the frames rest on the edges, and I have to add a rim around the top to hold the cover above the frames. I splice two together for deep or jumbo depth frames and add an entrance disk. Free, lightweight, good looking, a bit time consuming to hobble together. Please note they were caught with bait box on ground level.