Review on GeeekPi Raspberry Pi 4 Armor Case with Dual Fan, High Quality Raspberry Pi 4 Aluminum Alloy Case with Cooling Fan for Raspberry Pi 4 Model B (2510 Fan) by Jay Arnold

You don't need too many instructions but they help a lot with the cooling part, it's very simple and easy to assemble. The case is very durable and the construction is made of metal. Extending on the sides in a way that protects the pi IO pens from damage from most drops or bumps as they can hit the metal on the frame, preventing things from reaching the pens unless they land directly on the pens. My only complaint is that I wish the fan cable routing to power and I/O ground could be cleaner somehow, but that's no blow as it's the best way to solve the problem I've had in cases where full I/O as far as I can. Don't figure out how one package can expose all the I/O and not have a little weirdness of the wires. I've had it for a few months now and I'm generally a bit rough with my hardware and the fans are stable and temperatures are okay. The fans are a bit noisy but they keep the Pi cool and I might replace them if it really bothers me. This Pi performs constant cleaning of security camera streams sent to it using Tensorflow and OpenCV. It's an 8GB Pi 4 so the workload it runs is on the higher side, and cooling the bot in general was an issue when I was mass overclocking. It wouldn't work, but it's overkill and unnecessary for most Pi projects.