Geekworm X1206-C1 Metal Case for Raspberry Pi 5 and X1206 UPS and Active Cooler and X1000/X1001/X1003/X1004/X1015/M901 PCIe Top

Excellent fit, just beware of instructions that cover multiple products (i.e. check that you're following the correct instructions for your card + case combination -- you must have the right combination for everything to fit properly). Also ensure you receive a pack of screws and standoffs as the height of these is critical in ensuring the ports are in the correct positions for the case. Happy to report that, with the right card for the right case, with the right screws included, this case works quite well.