This is an alternate way to fill the space of a DIN or JIN opening. these units are mostly used when installing a single DIN head unit into a Double DIN space.
AP9100 Universal u/dash bracket double din
Double DIN Under Dash Housing
INTERNAL DIMENSIONS: 172mm (W) x 99mm (H)
EXTERNAL DIMENSIONS: 282mm (W) x 252mm (D) x 130mm (H)