Thanks, guys. A follow-up question: how many shelf sleeves do your 3-shelf SoniCases have in them? The one in the pic has 2 shelf sleeves with plastic inserts for rigidity, and one empty shelf insert, for a total of 3 sleeves, but only 3 shelves instead of 4 (putting an insert into the 3rd sleeve would make it a 4-shelfer). I'm assuming it's actually a 4-shelfer disguised as a 3-shelfer, but since I've never owned a 3-shelfer I'm trying to confirm one way or the other. From the measurements, sounds like I have the 4-shelfer. Seems like the question about the 3rd shelf sleeve ought to wrap up confirmation mine's a 4-shelfer, with 3 sleeves, but only 2 inserts.