The world is going green! National audubon going green series help conserve the environment. These products are made of recycled plastic (contains 90% recycled plastic). Won t absorb water, thus feeder or house will not harbor mold or bacteria and ensures a healthier environment for birds. Hand-crafted of zinc chromate screws and made in the usa! This going green audubon seed tube feeder features the new e-z clean snap out base. Size is 5x5x18. Dimensions are 4.4 X 4.9 X 18.1 UPC Code = 715038308379