I have to remain neutral on the quality of these filters. I buy them in advance and wont be using them for several months/ years. What I am appreciative of is that the size I need was available; I could buy in quantity at a good price; and they arrived timely.
Put the new air filter in and immediately had problems. My house wouldnt heat up. Called a repair company and he went through multiple tests. It turned out it was the air filter. He said maybe it was not a merv 8. Total waste of money on this filter!
A week in and I have no complaints, great airflow and the filter is definitely cleaning some stuff up it's starting to change color with the dust and stuff it's collecting. Plus it's construction is solid