Hand-crafted observation box to hang on the wall so you can observe the female Mason Bees laying her eggs and spinning cocoons. One surface of the box is a weather safe clear panel. There is a sliding door covering the panel. The box may be mounted horizontally or vertically and is approximately 5 5/8”Lx 4 7/8”Wx 2 1/4”H. Great teaching tool for children learning about Mason Bees. No White Paper Tubes are needed.