The cover has double the thickness (6mm) of the original cover, which wasn't as stiff as I wanted. The screws are fully integrated in the cover and the general proportions fit better, which makes it look cleaner. In the last picture you can see the old cover for comparison. I printed it in ABS.
I didn't put much effort in the CAD modification, so it's not the cleanest modelling.
The RatRig logo blocks some area, so if you want the most airflow this might not be the best solution. If you still want the appearance you could make the logo appear on the honeycomb pattern, but a lot of details would be lost.
Der Autor hat dieses Modell remixed.
It's made for the standard cage not the adapted one at the origin. The logo is separated as an different part so it can be printed in a different colour easily.