10,000 ball capacity hopper is built to last. Heavy duty steel construction makes these hoppers durable. The sides are made from steel mesh to allow air to circulate and help the balls dry. The sides ans the bottom are made from galvanized steel to prevent rusting. A powder coat finish gives the hopper additional protectionand an attractive finish. Lined floors increase the durability and reduct noise when the balls are dropped into the empty hopper. (not pictured)