Simple Fan wind funnel

Made this for a wind tunnel I was making for a project. It is my first time 3D modeling something and it was interesting to learn from it. It is a simple but efficient build that does its job, could be used for various things depending on what you want. This model uses a desktop fan with the dimensions 92x92x25mm. It doesn't have any screw holes or any clips, I used duct tape to insure no air comes out :)