Rated for a 50 lb. light fixture and 35 lb. ceiling fan, ABB’s Carlon® Blue™ fan-rated ceiling boxes meet the latest industry requirements for ceiling fan support with vibration-resistant screws ...

This answer is based on the 2017 NEC. A. Outlet boxes for a ceiling paddle fan must be listed and marked as suitable for the purpose, and must not support a fan weighing more than 70 lbs. Outlet boxes ...

There’s really no problem in replacing an existing light fixture with a ceiling fan in terms of the electrical needs. But what you really have to be careful of is to make sure the electrical box that ...