I have a few of these Premium TKL manufactured cases, with black fuzzy lining. In pic #12, you can see the dimensions of a Martin OOO shape. Total depth toward the bottom 11.5cm (4.5"). The arch top is important for protecting your guitar.
Amethyst -love Art guitars. Custom Made Guitar Gibson Les Paul Styling and Basswood body with Flame Maple Veneer & Carved Top with White Binding Maple neck . Rosewood Fingerboard, 22 Medium Jumbo Frets 2x Gold Humbucker Pick Ups , 2 Volume , 2 Tone Knobs and 3 way Switch. Classic Tune-o-matic Bridge& Gold Die Cast Machine Heads Great Value ,Excellent Condition.