Nissan Titan Crew Cab 2004 - 2021 Under the seat subwoofer boxDimensions: 49. 25" wide x 6. 5" tall x 13. 25" deep Wrapped in charcoal carpet, black carpet or left bare Made for 8" , 10" or 12" subs Holes can be customized upon request Dual Chambered: 0. 65 cuft per chamber Overall airspace: 1. 3 cuft Sealed Can be made ported for a single sub and open chambered Have a custom design idea, we can build it