This is a pull tab for a window screen, to remove the screen from the frame without tools.

It wraps around the frame, which is different than normal tabs which are generally embedded into the frame. This makes them easier to install.

This is for window screens that have an 8mm width. I don't know if this is universal, but I think it is.

I suggest you print it out of ASA as it will receive direct sunlight.

Make sure you print it standing upright on its side as depicted, otherwise your tab will be too weak due to poor z axis layer adhesion. You should probably print with a brim.