Technical Abstract: An affordable, durable, portable nesting shelter will be useful to manage cavity-nesting bees for agricultural pollination. A design is described here that is assembled from commercially available components. It has been successfully used during field experiments with the alfalfa leaf-cutting bee and several species of Osmia bees. In a 4 year field study with commercial cane fruits pollinated by the bee Osmia aglaia, the shelters have proven to be quick to deploy, convenient to store, long-lasting, wind-resistant, and effective for excluding the frequent rains of northwest Oregon.