Is there a way to tell an ATX case from a Micro ATX

Burnwater

Reputable
Sep 15, 2014
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Ok so I have a Dell inspiron 660 case which is what im using now and I guess its pretty safe to say that its a Micro ATX case; however, I also have a case that is just sitting here. no box or anything and there is no way to tell what brand it is or model or anything and I was wondering If there were any ways to tell if what form factor it is. I need a ATX case and if It could potentially save me money then i'm gonna use. Here are a few pictures of the case idk if it will help at all but I had to try something.
(Inside the case) http://s1207.photobucket.com/user/burnwater/media/IMG_1906_zpsa41444a9.jpeg.html?o=1
(The front of the case)
http://s1207.photobucket.com/user/burnwater/media/IMG_0529_zps7f97ebf6.jpg.html?o=0