Gardener's Supply Company Mason Bee House Bamboo Birdhouse and Bamboo Butterfly House Set of 3 Create a haven for songbirds, butterflies and mason bees 6" W x 10" H x 5-3/4" deep, Birdhouse has 1-1/4" entrance hole, Butterfly shelter has 3-1/2" L and 4-1/2" L openings Made from Sustainable Bamboo Set includes one each birdhouse, butterfly house and mason bee house Set includes one each birdhouse, butterfly house and mason bee house