Product review (5 stars): Genuine Aprilaire products are good. You must be careful when you use cheaper ...
It fits properly. Normally, Genuine Aprilaire products are good. You must be careful when you use cheaper products from the third party. I bought a box of 10 from the third party and I paid only half price of the genuine ones , they were shipped and all of them were slightly dented on top. After I replaced the genuine one with the third-party one, the water was dripping so I used a different one but I had the same problem and I did not understand the reason why it was dripping. So that year I could not use my humidifier. This year I bought these genuine ones and the dripping was gone.  I could not be able to return these 10 filters since I bought it a few years before I actually tried them. One more thing, when I rinsed the genuine water panel with water, the water did not seem to change color; on the other hand, the water from the third-party water panel was yellow, it was scary. I was glad to throw them all; otherwise I may get sick.