There is a weak spot on the underside of the box, driver side, toward the front, where it serves as only a type of dividing wall, but no structural purpose. This spot was cracked upon arrival but I hid it with some Black Caulking since I got the “bed liner” finish (Shhh, don’t tell my wife. Haha). I’m sure I could have exchanged it for a new one, but I didn’t want to go through the hassle and risk the same issue with the new box. Having said that, I put two JL 12” TW1’s, powered by a JL 500/1 and it sounds amazing in my wife’s Ram 1500. She loves how it looks and how clean the fit is. Overall, I’m very happy.