Product review (5 stars): Fits the bill!
I have an older Sunbeam Humidifier, no one carries a lot of stock of the factory filter and it was nearly twice the price of this one. I was skeptical as I have once before tried to buy a generic replacement like this to find it would not fit the unit. It was about 2 inches two small in diameter and it was clear if I could get it on the base it was likely to pop off and more likely to tear.

The filter that came fit perfectly and looked nearly identical to the factory filter.