Designed for about 25-30 nesting females (about 80 cocoons). Wood is a natural habitat for mason bees and provides insulation and moisture control for the cocoons. Trays are easy to clean and re-use year after year. Includes 7 stacking trays of varying lengths, 2 bands to hold them together, and a removable cardboard back panel.
Measures approximately 5-3/8" wide x 3-3/8" tall x 6-3/8" deep.