Constructed from 5/8" poly lumber (made from recycled plastic jugs and bottles) for long-lasting, outdoor use; stainless steel screws; rust-resistant continuous hinge; heavy-duty, acrylic panels; and fully routed edges. Woodpeckers cling to the side. Fill with shelled peanuts or woodpecker mix. Capacity: 1-1/4 quarts. Dimensions: 6-3/4” W x 6” D x 18” H (plus 7" hanger). By Birds Choice.