What is a Recess?
A window recess (or window reveal) is the distance between the surface of a window pane and the the wall that the window is built into. In order to determine whether you will be designing/installing an inside or outside mount, we need to first work out whether the window has a reveal and, if so, how deep it is.
A recess is not the same as having a window sill.
If you have a recess, you then have the option of inside mounting your blind.