Thanks for looking, new UNUSED custom built 8" downfiring sub box for shallow-mount subwoofers. designed to fit under 02-07 impreza (and STI) seats. Dimensions are 12.25 x 11.75 x 5.25 inches. Will also fit under Forester seats as well. Designed to downfire the sub towards the floor for better pressure and sound quality. I am running one now with a Pioneer shallow mount. After searching for a long time, and not finding a good replacement for the OEM unit, I got with a local box builder (and multi-SPL winner) to design a box. I am selling this one, but I will be able to sell more of them if the demand is high enough. If I get enough interest I will get a clubwrx vendor status and begin to sell. These were just prototypes, but the ones in the future will have darker, more popular charcoal/blacker carpet. $75 shipped. Comes with speaker wire.