I know everyone says powder should be kept in a closed cabinet or case of some sort, but an old Army Range officer said he keeps his on an open shelf. His reasoning is inside a closed cabinet an explosion might be worse than on an open shelf unless you had it in an explosion proof case? Mine just sits on a shelf over my loading bench. I figure either way if I have an explosion, its not going to be pretty. One note, all of the jugs on the shelf are 1 lb jugs. Anything I buy in larger jugs which these days is only Universal, I sit on the other side of the room on another shelf.