The Monster Brewing Hardware Hoppers are well constructed, essential add ons for your Monster Mill.  If you already have a 3 roller Monster Mill, and decided that making your own hopper was too much work, this is your solution!  For a hopper that fits the 2 roller Monster Mills, see our MILL543.  Or, for a complete package, see our 3 Roller Monster Mill Packages.,Ships unassembled.  Hopper stands 9" tall above the mill, and the top opening is 11.5" x 12.75".  Hopper can hold at least 11 lbs of brewing grain.