The instructions are pictographs with no written directions; the screws are extremely cheap and 2 of them snapped and broke while installing the wheels onto the doors. They're lodged in the door and are a visible blight now. The width is really 47" not 48" because the slide track is 47" and the height of the unit is problematic. The doors are 80" but the wheels and slide mechanism add another 2". I had to cut tile and remove oak molding in the threshold to fit the larger than expected door. They are beautiful doors but are flawed with really cheapo installation kit and poor instructions.