Final answer:
The rough opening for a door frame installation should be about 2 inches wider and ½ to ⅔ inches higher than the door to ensure proper fitting and operation.
Step-by-step explanation:
When installing a door frame, the rough opening should generally be about 2 inches (5 centimeters) wider and about ½ to ⅔ inches (1.27 cm - 4.45 cm) higher than the door itself. These dimensions provide enough space for the door frame, while also allowing for any necessary adjustments during installation.
The extra space ensures that the door can operate properly without binding and allows for the installation of shims to plumb and level the frame if needed.
When installing a door frame, the rough opening should be about 8 diameters wider and 15 diameters higher than the door. This ensures enough space for the door to fit properly and allows for adjustment during installation.