It is designed for a 12" subwoofer and has approx + or - 1.25 Cu Ft. and a 8.25'' mounting depth. We Recommend A JL Audio Subwoofer, But Most Others Subs Will also Fit. Pictures show a vinyled enclosure to demonstrate the final look. The box you will get will be the white box in the pictures. It ships with a terminal cup installed for easy wiring. It gets installed on the driver's side rear section of the vehicle. You will need to do some cutting of the factory panels to allow room for this enclosure to get installed. Once in the vehicle it is hidden and out of the way for a total stealthy look. No more loosing your storage room in the trunk any more! Still have FULL USE of your trunk space! These enclosures are sprayed with industrial-strength fiberglass using a Chopper Gun, which means no air pockets and the best quality fiberglass finish. The fiberglass used in these enclosure is the same material used to make architectural load bearing columns. PERFORMANCE PROVEN WITH MANY OF THESE ENCLOSURES OUT THERE. GET READY FOR SOME SOLID BASS WITHOUT SACRIFICING ANY ROOM!