Product review (2 stars): 2" too short, poor absorption, humidifier capabilities reduced by using this filter.
The filters are a poor fit for my Vornado Humidifier.  The filters are about 2" short of filling the slots in the humidifier which means there is less evaporative surface area than the humidifier was designed for.  Also, I there is no silver anti-bacterial coating on these filters like the original Vornado or many other third-party filters.  Finally, these are made of a plasticky type material that does not seem as absorbent as the Vornado filters.  It takes my humidifier almost twice as long to empty the water reservoirs with these filters.  This 'one size fits all' isn't a good buy for your Vornado humidifier.