Product review (5 stars): Mine are genuine Vornado filters (shipped direct from Amazon)
Although I have ordered the generic filters for past winter seasons, the filter I received recently (October 2013) is the genuine Vornado. I'm inclined to believe they are genuine when shipped direct from Amazon's warehouse, and possibly generic when shipped by a 3rd party seller. However, whether genuine or generic, I haven't been able to tell any difference in how well they humidify or how long they last before needing replaced. There is a very high lime concentration in the water here, and none of them last more than 6 weeks before needing replaced.