Fascia panels, which are also known as fitting kits, are needed when replacing the original head unit with an aftermarket head unit. It can convert the aperture after removing the original manufacture's head unit to suit the standard din size used by the majority of aftermarket head unit manufacturers whilst retaining the original visual appearance of the dashboard. Replacing your OEM radio with a mult-functional single din or double din head unit with the help of Xtrons fascia panels.