In terms of interior hardware, there are all kinds of finishes. Very easy to install, these elements bring the final aesthetic touch.
Prepare and tilt the handle in opening mode.
Screw and rotate the screw cap.
Clip the water drain covers into their slots at the bottom of the window frame.
Clip with a cutter the support provided behind the hinge.
Cover with finishing cover.
Clip the finishing cover at the top.
These pieces are thin and fragile, do not force!