Inserts are at an angle that allows feed to flow down without bridging and resists overflowing. Adjustable height of the inserts control the feed-flow of different types of feed. Inserts are removable when feeding round bales, to allow cattle to get at the total bale. Manger depth is ideal to prevent overflow and elimiate residual spoilage. 12 guage rust resistant steel feed manager. Rust and acid resistant green paint.