SKB is revolutionizing the industry again with their INJECTION molded acoustic guitar case! The 3i-4217-18 accommodates any Dreadnought guitar 3i Series injection molded waterproof cases are constructed of ultra high-strength polypropylene copolymer resin and feature a gasketed, waterproof and airtight, submersible design (IP67) that is resistant to corrosion and impact damage. Its continuous molded-in hinge, patented "trigger release" latch system with TSA recognized and accepted locks, four reinforced locking loops for customer supplied locks, comfortable, snap-down rubber over-molded cushion grip handles, secure stacking, and automatic ambient pressure equalization valve (MIL-STD-648C) all contribute to its military grade design. The plush interior provides total neck support and protection on all sides. The iSeries 4217 Acoustic Dreadnought Flight Case also fits the following guitar styles: Acoustic Grand Concert Acoustic Grand Symphony Acoustic Auditorium