Product review (5 stars): Perfect Replacement Filter
We live in Northern Illinois and the Winters are cold. WE need a humidifier in the house because the furnace runs a lot. My AprilAire Humidifier is about 3 years old. I checked it after Christmas because I was getting some water in my furnace filter and the AprilAire filter was full of dust and and stringy fuzz. Reminded me of a dryer filer full of fuzz. The manual said the filter was a number 35 so I looked on Amazon and found this one at what seemed a reasonable price. It was also prime shipping. It turned out to be a perfect replacement - same as the original. It installed quickly and I am happy again.