Define R5 Exhaust Vent (Top-Rear)

I wanted to use the top exhaust grill of my Fractal Design Define R5 computer case, but didn't like that dust could fall in and that I wouldn't be able to place items on top without compromising airflow. I basically extended the top lid with similar dimensions to the case's front grill.

I forgot to add an indent on the fins to prevent the lid from sliding around. I added it on V2, but will not test it.

STEP file included!