This feeder is built like a tank with 3/8"-thick walls of UV-resistant, HDPE plastic for exposure-resistant, high-impact durability. The three-way feeding system has 5" ports with 4" openings made specifically for a deer’s muzzle. And the feeding system easily converts for use with an automatic timer (not included). Its lid is designed with a loose fit for ventilation. The sturdy ALL-IN legs are made of 14-gauge galvanized steel. The four-piece ALL-In leg system sections are 25" each. One section can be added (add height from 75" to 100") to convert your protein head feeder to a spin feeder (via conversion kit 421021). Recommended height is 75" for protein head and 100" for automatic spin units. Stainless steel inserts and galvanized hardware offer lasting corrosion resistance. Made in USA. Capacity: 350 lbs (corn), 250 lbs (large protein pellets). Leg length: 72". Hopper weight: 30 lbs.