They are small and don't take up any room. I have mine outside attached/screwed to my 4x4 fence post to pens one on each side of pole high enough they don't poop or get dirt in them to small to try to roost on one for grit and other for oyster shells. Work great for me. You can google (corner feeders for poultry) and there will be several places you can get them from. I have had mine for 6 plus years outside and still like new.