Gibson Jumbo Custom Acoustic Hardshell CaseNotes The upper bout is 13" across and the lower bout is 16 3 4" across. A Gibson Jumbo Custom Acoustic Hardshell Case in Very Good condition! At Evolution Music, we attempt to highlight cosmetic defects (if any) by picturing every angle of every piece of gear so you know exactly what you are getting. We always picture any and all accessories too. What you see is what you will get so please check out the pictures! Everything we sell has been tested