This Heath deluxe 24-room purple martin house is made of tough, long-lasting lightweight aluminum for years of service. Hexagonal design is efficient and esthetically pleasing. Material Lightweight aluminum, Assembly Required Yes, Dimensions L x W x H in. 24 x 24 x 38, Mounting Type Pole mount, UV Inhibitors Yes, Product Type Bird housing, Includes Door stop, rail, Compatible With Additional housing unit, Capacity 24 room. Hexagonal design is both functional and attractive House units can be added on as the colony grows Mounting pole sold separately Model Number: AH-24D. Age Group: adult.