Another Mezuzah Placement Shaloh
Since the other Shaloh went over so well and thank you everybody for your answers I have another shaloh.
This is the Beis Medresh where I Daven Mincha everyday. In the back of the Beis Medresh there is a opening to the Seforim shelves, as you can see in the picture (and I made a red box around it) there is a Mezuzah on the right post, its been nagging me for a while whether this opening really needs a Mezuzah, there is a door on the left side so maybe its considered a opening to the door? Any insights?