ventilation grid
thingiverse
The inner dimensions off this ventilation grid is 200*90 milimeters. If any doubt, please don´t hesitate and ask me.
Download Model from thingiverse
With this file you will be able to print ventilation grid 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 ventilation grid.