Cooling duct for Ender 3 V1 4010 Fan

I wasn't satisfied with the stock cooling on my Ender3, so I made this minor upgrade. I've attached two files below: one without support, and one with my custom supports. They're not perfect, but they work. I printed it at a 0.12mm layer height and a 0.4mm nozzle. However, I would recommend printing this part with a smaller nozzle (0.2mm, maybe even 0.1mm), as the walls are quite thin for a 0.4mm nozzle. If you have any questions or ideas, let me know.