Blck09cobaltSS

hey guys. New to the forum but I was wondering how I remove my single din pocket ( I already removed head unit). I got this radio prof. Installed a while back and am upgrading to a double din DVD player. The pocket has a little cubbyhole underneath for cd storage to fill in space for a double din. I felt around the back and it feels like there are clips or screws? In the back. I tried tugging on it and the thing won't budge, lucky I don't have a chainsaw. But yeah, any input would be great thanks!