North American 3DVerkstan Face Shield - Increased top cover and stackable.
By Miguel Clement
Free
It's free to download
Technical
Recommended: PETG, Other materials should work. I would do 3 perimeter walls on PLA for extra strength.
Layer Height - .3mm
Walls - 3
Infill - 10%
Supports - NO
Build Plate Adhesion - Skirt
Free