John P, I agree with you about the cheap fans and the poor standards that come with them, but the issue at hand here is this. If the ceiling fan manufacturer suggests using a ceiling fan-rated box than a ceiling fan-rated box MUST be used.
NEC article 110.3 (B) tells us that we must comply with "any instructions included with the listing or labeling" of any ceiling fan or electrical equipment. So if the CF manufacturer says it's ok to use 6/32, 8/32, drywall screws or crazy glue, that is the rule we need to abide by. I don't make the rules, I just do my best to follow them.
