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How to fit a door handle
Measure 41 inches (100 cm) from the floor.
Although you could follow the directions that come with your handle instructions, the most common placement for a door handle is 41 inches (100 cm). Place the end of a tape measure on the floor and mark the narrow portion of your door with a pencil.
You can also measure the height of the other door handles in your house and use this measurement when marking the handles. Attach the door handle kit's template to the door.