I am off to college this fall and am looking for a case to bring my Thunderbird Pro IV with me. Currently I have the official Epiphone Thunderbird case but the thing weighs a ton, so not a lot of fun to lug around campus. I am looking into the Kapsule currently but am unsure if my T-bird will fit.
The Kapsule is open-cavity, so I’m thinking that there is a good chance that your T-bird will fit if the length and width is OK. These are the dimensions from the GruvGear website: 14”L x 47” x 2”W. To be on the safe side, you could just shoot them an e-mail and ask.