AirGrate
prusaprinters
Modeled off image model image from this reddit post. https://www.reddit.com/r/DIY/comments/192vjiz/hvac_register_outlet_we_would_liked_to_duplicate/
Download Model from prusaprinters
With this file you will be able to print AirGrate with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on AirGrate.