Free-spinning reel on top makes it difficult (if not impossible) for chickens and other birds to roost on this feeder. Snap-in reel makes filling and cleaning easy. Curved lip on both sides helps reduce feed waste. Made of heavy-gauge galvanized steel for years of service, with rolled edges for safety. Measures 23.625 inch long by 4.25 inch wide by 2.25 inch high. Limited supply on sale - 1 left at sale price