S&K Manufacturing BH12 Bird House, 20 in W, 21 in D, 19 in H, Polypropylene, Green/Tan, Pole

Its name says it all, the best purple martin house. It offers housing for 12 purple martin families. But that is just the beginning. Each comes with porches, landing and take-off rails and hinged doors for easy cleaning. It snaps together easily. No tools required. It is just what the name implies. The best purple martin house. S&K Manufacturing, Inc. purple martin houses are constructed of 100% UV protected injected molded polypropylene copolymer plastic.