Dome can be adjusted up or down to limit access by larger undesirable birds and squirrels. 8 1/2 tray has a capacity of 1.25 quarts and is protected from the elements by an impressive 12 dome. An all purpose feeder. Fill with seed, fruit, nuts mealworms, pet food, or small chunks of cheese. Holds 1.25 quarts. Size is 12 Diameter. Dimensions are 12.375 X 12.875 X 5 UPC Code = 026451114752