This purple martin house features a durable and heat resistant aluminum house that can keep the birds cool. It includes door stops and railings to protect them from danger. This house of birds consists of 18 rooms. With its aluminum construction, the house makes it easier to raise or lower. Features:. Consists of 18 room aluminum purple martin house. Constructed of durable and rust-free aluminum. Heat resistant and keeps the purple martin cool. Easy to clean floors for snap out. Comes with railings for them to keep safe. It also includes a door stops. Can be assemble with screwdriver and pliers Dimensions: 14"H x 6.5"W x 11.8"D. Material(s): aluminum