If you are talking about the extra gap left by factory headunit when replaced with aftermarket smaller unit (single DIN), then just buy a Stereo Radio Pocket as per link below;
Also, thankyou for signing up and immediately being like many other new people and asking a question without any effort to search. Maybe look through this site a little bit before posting questions. There is a "FAQ (Frequently Asked Questions) Page" in the section under VT-VX. It will answer many questions regarding your model vehicle. Check it out in my link below;