Little Giant Double Door Hog Feeder is a heavy-duty feeder with dual door that is specially built to withstand the toughest usage. It is constructed of heavy-gauge steel which features extra thickness in the trough and feed doors. The trough is deep enough, with a feed saver lip, to help preserve food. The two doors help keep the feed moisture-free and prevent pests from coming in. The top door can be flipped open from the back to let you refill it easily from the outside of the pen or from the rear. There are slots in the backside to allow you to mount it on a rail or wall with ease. This double door feeder has a 100 lb. capacity and it measures 24.25 inches long, 19.75 inches wide and 35.75 inches high. It comes fully assembled for your convenience.