Review on GeeekPi Raspberry Pi 4 Case with ICE Tower Cooler - CPU Cooling Fan, Raspberry Pi 4 Case with Fan, Heatsink & Case for Raspberry Pi 4 Model B by Mark Adlesh

This is a combination of two items: the original ice tower with a built-in fan and an acrylic sheet case that also contains a fan that is usually mounted horizontally. Since they are two elements, it's difficult to figure out how to assemble them, leaving you with a block where the ice tower actually touches the CPU to transfer heat. You must place the stainless steel tower support legs BETWEEN a few tiers, not over them. Otherwise, despite the lack of instructions, this is a great kit and you end up with an extra fan.