Patio no assembled are the easiest to replace, It is recommended to take some measures the distance between the centers of the mounting screws to ensure that its new dimensions of door handle are- Patio Doors With Built In Blinds
Patio doors with built in blinds Mortised courtyard door handles have a locking mechanism rectangular shape is inserted through a rectangular hole in the edge of the patio door. Door handles patio embedded are a little more complicated and require that the width of the lock is measured to identify the plate end face (round or square), measure the distance between the centers of the mounting screws and identify the name of the manufacturer of the door.
If patio doors with built in blinds none of this is clear, you can take a picture of the door handle of the courtyard and leading to the hardware store where you are buying the new handle so that you can buy the right replacement patio door handle. Installing the door handle of the yard