Three separate compartments with approximately a 250 lb capacity. Heavy duty impact resistant, durable poly construction with UV protection will withstand temperatures to 40 below zero with out breaking. 3/4" thick, reinforced rubber mat is built to withstand the elements and keep minerals dry. All hardware is stainless steel to prevent rusting. Quick detach top allows the rubber mat to easily be removed for speeding up the filling process. Three anchor points around the outside for staking down the feeder.