Ultra Thin ICE Tower Cooling Fan - for Raspberry Pi 4B - adjustable speed + accessories - Waveshare 23093 from Mounted fans category available to buy in a robotic shop Botland. Very fast shipping!
PI4-ICE-TOWER-FAN - Waveshare Wiki
GeeekPi Case with ICE Tower Cooler CPU Cooling Fan for Raspberry
ICE Tower CPU Cooling Fan for Raspberry Pi Botland - Robotic Shop
Ultra Thin ICE Tower Cooling Fan - for Raspberry Pi 4B
Ultra Thin ICE Tower Cooling Fan for Raspberry Pi 4B, w/ Female
Fan 5V 30x30x10mm 2 wires - 2pin 2,54mm female Botland - Robotic Shop
Ultra Thin ICE Tower Cooling Fan - for Raspberry Pi 4B
Low-Profile ICE Tower Cooling Fan for Raspberry Pi 4B/3B+/3B, 5mm
Waveshare Low-Profile ICE Tower Cooling Fan for Raspberry Pi 4B/3B
Raspberry Pi Active Cooler - heatsink + fan for Raspberry Pi 5