This model is to be screwed into the inner side of a frame for a picture or poster so it can be hanged on a sloped ceiling/wall.
There are cutouts provided in the model to slot over a screw that can be drivin into the wall or sloped ceiling like some frames already come standard with, but my self created wooden frame for my Millenium Falcon art work did not.
You'll need some screws to mount it to the inside of the frame and print the file 2 times, there is one left and one right side in the file.
The author marked this model as their own original creation.