Yup just re seated one of mine . They look to me like the later plastic type. In which case get yourself some black mastic and apply that to the recess of the window. Insert the fixed pane. Now pick up pane and frame together and push lower edge with the slider flange over the door edge at the bottom. Then push the frame top edge toward the door and you should have it. The felt and rubber channel then tucks in between the plastic channel you have just inserted and the outer edge flaps over the edge and to the interior of the car with a rounded profile.
However you may have some little clips - keep hold if these as hard to obtain. These clip over the plastic frame and the metal edge of the door to stop squeaks and rattles.
If you have some apply these before the rubber and felt channel is added