Unlike overlay doors, which cover the storage room framework, inset doors fit within the opening, leaving a specific divulge (the room between door and structure). Unlike overlay doors, which cover the closet framework, inset doors fit within the opening, leaving a certain reveal (the gap in between door and structure). Will absolutely inset doors increase the time needed for closet installation?Typically, setting up inset doors takes longer than overlay doors due to the reality that of the tighter resistances.