Here is another tiny computer case for your next PC. The Fractal Design Torrent Nano has an open grille and 180mm front fan for better cooling. It can handle up to 3-slot thick 335mm long GPUs. This PC has dust filters on the front and bottom.
The Torrent Nano has a removable top bezel and routing clips with cable ties for cable management. It has a SSD bracket with room for 2 x 2.5-inch drives. It supports water cooling.