security camera

Looking for advice for a rack mount. I have a rather large NVR (security camera recorder) 17.5" x 17.75" and I am trying to find a lockable server rack I can mount on the wall. I think I found one that is 3" wider than normal and 20.5" deep...

Hi, I want to place USB security camera in aluminum case to keep it cooler. Do you think aluminum case prevents fire from spreading in case camera is left months without supervision and overheats and starts burning? I will place camera on top of cupboard and need aluminum case to hold camera...