PolyDome Bulk Bins are a great choice for storing high moisture corn, soybeans and other granular materials. These bins are made from high density polyethylene and will never corrode or rust. They all have a 22" top opening with a filler cap as well as a 16" hole in the bottom cone. These bins feature super heavy duty support frames with large secure plates for more holding power. They also have flat strap cross bracing for better stability. Sizes range from 0.5 tons all the way up to 8.5 tons.