Inside Cavity Dimensions: 7.2 in width 2.45 in height 5.45 in depth Outside Housing Dimensions: 7.65 in width 3.325 in height 5.75 in depth One side is slightly thicker than the other for mounting purposes.Made it with stock version of XYZPrinting Da Vinci 1.0 and black ABS filament. WHY I MADE THIS: I needed a way to mount my stereo on my motorcycle and wanted a housing that would be able to be weather resistant. Used the dimensions of the stereo itself to create the box.