Since I started using this filter, I stopped getting sinus infections and suffer less from allergies! Great product. You can feel the effects of putting in a new air filter immediately.
I used to try and save money on filters until I bought Filtrete. These filters are fantastic. I can see the difference and don't mind spending more for these great filters.
I decided to up spend on this filter and glad I did. I feel a piece of mind knowing this filter is on the job filtering the air thru my 4 bedrooms and 2 bathrooms on the upper level. Will re-purchase when I get the automatic reminder telling me its time.