An available option for 16" to 22" hoppers, Sure-Flo directs feed down the hopper of the bin rather than down the center, creating a first-in, first-out feed flow. The gentle pivotal movement of the heavy-walled molded cone enhances flow as feed passes over it and counters bridging conditions.The Sure-Flo support bracket bolts to the hopper collar of new or existing feed bins and is quick and easy to install.