The squirrel-be-gone system uses the squirrel s own weight to block off seed access. This feeder attracts more birds because of the 9 feeding stations and separate 3 cavity design allows for a variety of seed Features an adjustable spring tensioner for small squirrels. Size is 9 Pound. Dimensions are 9.998 X 10.01 X 20.835 Plastic And Metal, 8 Pound Capacity. UPC Code = 078978337008