What must be ensured about the outlet box when installing a ceiling paddle fan?

When installing a ceiling paddle fan, it's crucial to ensure that the outlet box is capable of supporting the weight of the fan. Ceiling fans can be quite heavy, especially when considering additional factors like blades and light kits. The outlet box must be specifically rated for fan support, as standard boxes may not be designed to handle the dynamic load and vibrations created by the movement of the fan. Using an appropriately rated box not only ensures safety but also helps prevent any potential damage to the ceiling or the fan itself from inadequate support. This is a critical consideration in installation to comply with electrical codes and to maintain the functionality and longevity of the ceiling fan.