Fits well enough
Before the box was ever purchased Crutchfield was contacted to see if a Rockford Fosgate P2 12" dual-coil sub would fit. The answer was yes. Come to find out during installation, the external ring which is used to secure the sub does NOT fit. If you do not use that ring the sub will eventually deteriorate around the screws, or just not sound like it should. I had to buy a different sub in order to have everything fit and work correctly. Also, if you have a satellite receiver, either you must relocate it or remove it for the box to fit. The grille on the box did not fit so well with the Kicker sub either. The box looks great, and doesn't take up too much room! No complaints about that.