The radio panel allows you replace your original factory radio or commercially available DIN radio with a double DIN unit (such as Car navigation system, Audio system, Car DVD player…) The installation is very simple, please check the below steps, 1: Remove the original radio 2: Use radio panel and secure with screws 3: New Double DIN Mounting the device Note: Size may be 1-5mm inaccuracy due to hand measure. Car stereo showed in the picture is not included, just the Stereo Panel. Please check carefully before purchasing, if you need the car stereo as well, please contact our sales for purchase. We shall reply you shortly!