I had to call around for this same thing today. They said if you have the piece of glass, the door panel needs to be removed (obviously). In my case, everything is electric and this unplugs from the door panel. The only issue with doing it yourself is the clips, which may require a special tool when you remove the panel or they can break.
locks out rear door window switches
To install a door window panel, first remove the door panel and any existing window components. Place the new window panel in the door frame and secure it in place. Reattach the door panel and test the window to ensure it functions properly.
To install a new window regulator on a MGRZ driver's door, remove the door panel and the wiring attached to the power window mechanism. Remove stereo speaker from the inside door and the window glass. Remove the old window regulator and replace with new.
That's the door on the rear of the Explorer , where you can open the window separately or open the liftgate with the window closed
To turn a window into a door, you would need to remove the window and frame, enlarge the opening to fit a door, install a door frame, and then hang a door in the newly created space.
remove door panel, install new window
How do I install passenger side mirror 2010 Ford Explorer
To install a sliding door window in your home, you will need to measure the opening, purchase a sliding door window kit, remove the existing window, and follow the manufacturer's instructions for installation. It is recommended to seek professional help if you are not experienced in home improvement projects.
You must remove door panel and replace window regulator.
The passenger window on a windstar is best installed by a professional. However, if you have some auto repair experience, you can easily remove the door panel on the door by removing the screws and then you will be able to install the new window.
How do I install passenger side mirror 2010 Ford Explorer
install a new latch