How to delete downloaded install files?

Hi, I uninstall older Unreal versións from launcher, but the free space in my hard disk is the same. I think there are some download files at anywhere.
I have this folder in C:\Program Files\Epic Games:

  • 4.14: 15.2GB
  • DirecTXRedist: 8.46Mg
  • Launcher: 12.5GB
  • UE_4.15: 14.9GB

I uninstalled 4.12 and 4.13 Unreal versions from the Launcher yesterday because only had 70GB free in my disk. The space doesnt’s incremented after uninstall this versions, however. I have 70GB today…

same question. i have a very limited disk space.