Blinds Frame for Window with air vents

I had a few windows with air-vents / strips at the top of the window preventing us from hanging blinds inside the window frame as we did on all the other windows. I did not want to hang them before the window frame.

So i made this frame that will create some "screw meat" to screw the blinds on inside the window frame.


You can see on the X-Ray picture where the screw meat is. You can just use regular wood screws, but I do advice to pre-drill small holes to guide the screws better and prev