My new home is almost done being built, and one of the extras I asked for was for two of the rooms to have junction boxes in the ceiling suitable for hanging a ceiling fan in the future.
The light fixtures haven't been installed yet so I can see inside the junction boxes but can't really distinguish between the braced boxes and the regular boxes. The attic is extremely limited access so I want to avoid crawling around up there to look for a brace.
Is there a quick or easy way to distinguish between a junction box that is able to carry the weight of a ceiling fan safely versus one that is not? I could just take their word for it but they haven't had a very reliable track record so far when it comes to following through with my requests even when they tell me they will do it.