Vacuum Palette Flange

I'm using this flange to connect my shop vac to the vacuum palette I built for printing posters on my screen printing press. It can be printed with any settings you like, no supports are necessary. It fits a 2.25 inch vacuum hose. I imagine it could be scaled up or down to fit other sizes. Check out the project I used this for: https://youtu.be/BUtKJSsPp8g