Double sided to attract more birds. No-waste seed baffle. Top locks securely to prevent squirrel access. Holds sunflower seeds, peanut halves, safflower, finch/specialty mixes and more. Easy to fill and clean. Post mount capable (post not included). Heavy duty hook included.Size is 11 X 10.5 8. Dimensions are 11.5 X 10.5 X 9.25 UPC Code = 047977000817