This Magnum feeder is made to attract the most number of birds with it's large 4 quart capacity. Just fill with thistle and watch the birds enjoy. This one comes with a steel top and bottom. It measures about 11" in diameter and 12.5" high. Has a powder coated steel screen mesh to hold the seeds and give plenty of clinging room. It is weather and squirrel resistant. Comes with plastic coated hanging cord. Your birds will love this one!