Outwit those pesky squirrels!When a squirrel hops on, an adjustable perch bar drops down, and covers the seed supply—keeping your seed safe for the birds. All-steel construction. Hang it, pole mount it or the roof can be permanently attached to a tree or post. Hopper removes from the roof for cleaning and filling. 1 – 1-1/4 inch pole not included. Holds 11 pounds of seed. Dimensions are 9-1/2 x 9-3/4 inches.