Wise Poultry Feeder Silo Extender Attach to either Wise Cage Feeder (Items 540095 or 540096) or Wise Mountable Feeder (Items 540097 or 540098) to increase feed capacity by 10 lbs. Allows users to increase feed capacity of their Wise Feeder as their flock grows. Holds 10 lbs of feed. Measures 7"H x 5.5"W x 11.5"L.