metal window frame
thingiverse
small metal framed window for model boats etc, measure about 22cm x 22cm but can be made slightly bigger/smaller. These have been painted and are glued on a r/c model tug to make windows look more like that on a working boat.
Download Model from thingiverse
With this file you will be able to print metal window frame 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 metal window frame.