This model allows you to stack Raspberry Pi 4, M2 screws and nuts are required to mount the Raspberry Pi
It is a push fit system, with a hollow space between the pillar so that a M3 screw can be used to secure the stack.

There are 3 print profiles available. one is just the mount for the Raspberry Pi 4 and mounting plate, the second includes a mount for the Raspberry Pi 4 fan ([https://thepihut.com/products/raspberry-pi-4-case-fan](https://thepihut.com/products/raspberry-pi-4-case-fan) ) as the top layer and the third includes a mount for the Raspberry Pi 4 fan as a middle stack

 The M3 mounting holes have a distance of 50mm x 70mm.

This model is part of a collection of stackable mounts.

See here: [https://makerworld.com/en/collections/6179802-stackable-mounts](https://makerworld.com/en/collections/6179802-stackable-mounts)