Speaker grill
thingiverse
You're going to need a grill that's specifically designed for this job. I've got just the thing - a circular grill with an original diameter of 20 centimeters. Don't worry if you need something bigger or smaller, just adjust the size to fit your needs.
Download Model from thingiverse
With this file you will be able to print Speaker grill 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 Speaker grill.