Ray Box Slit Screen
thingiverse
Although not expensive, ordering replacement screens for the standard ray box can be time consuming. If you just need one, and you have a 3d printer, why not just print one?
Download Model from thingiverse
With this file you will be able to print Ray Box Slit Screen 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 Ray Box Slit Screen.