Question Do I need to find a way to close up the back of the case better?

[struganator]

I just finished my first build and am adjusting things as I go. My case is a Phanteks P400S. I appear to be missing a piece to the case. I believe it was missing when I received the case, as I kept track of all of my pieces as I was building. I reached out to Phanteks to see if they could send me a replacement. My question is in general, aside from the massive spot I have missing on the back of my case, is it okay to have this much open space in the back of your case? I have attached a picture of what the back currently looks like:

 

[Rogue Leader]

I think its supposed to be like that, but I may be wrong.

That said there really is nothing to worry about.

 

[struganator]

Yeah, it is supposed to be like that. I asked Phanteks for anyone else curious. If you want to close that up anyway though, they offer to send the piece