is currently backordered. You may still purchase it now but it won't ship until it becomes available again.
When replacing a light with a ceiling fan, the installed wiring will be acceptable.
When replacing a light with a ceiling fan light combination, then 2 power wires are required to control the fan and light independently. If 2 power wires are not available then a remote control is the simplest and cheapest option to control the fan and light.