Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3435643.

The rubber USB port cover (flap) on the top of my NZXT Phantom 820 was starting to disintegrate and I've always found it boring/ugly. This is a replacement that sits slightly recessed into the case. The clear TPU looks pretty nice and doesn't slide out too easily. dwg file included for additional modifications.