Raspberry Pi 3 - Enclosure with top mount for fan

A modified top part for a Raspberry Pi 3 enclosure, designed to accommodate a 40x40x10mm fan and side outlets to improve enclosure cooling. This design change significantly reduces CPU temperature, increasing the lifespan of the Raspberry Pi, especially in 24/7 environments such as NAS setups. Please note, this version is not compatible with Raspberry Pi 4 as it has a different port layout. The location of the fan and heater also means that this top can still be used with heating plates.