OSP Cases | ATA Road Case | Amplifier Case for Fender Twin Reverb | ATA-TWINREV This ATA case is custom designed to fit the Fender Twin Reverb Dimensions Outside 28-1/2 x 16 x 29 (LxWxH) Inside 26-1/2 x 14-1/2 x 21 (LxWxH) Ball Corners with Industrial Rivets and latches Incredible professional quality - built for the road! 3/8" Plywood with Black Laminate Tongue and Groove Metal Railing