PRODUCT LINE MODEL #40805 Shaft size: Bin size: Drive: Under bin clearance: Options: Shaft size: 2 in. diameter Bin size: 6 - 9 ft. diameter Drive: Open Under bin clearance: 24 in. minimum Options: -Larger discharge to accommodate 8 in. augers Disclaimer: Model size shown is only an example. Model sizing is based off many factors including but not limited to: material type, bin size, bin height, hopper slope, etc. It is determined on a case-by-case basis.