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.

So far so good. I can't really tell a difference after a week. We recently moved into the house and I am not sure how old the other filter was. I've never bought such a large filter either. No complaints about it.

These filters are difficult to fine in stores because of their size. The cost is way more than other size filters, and I fail to see why because they are basically paper and a wire mesh construction.

The Filtrete products are the best 4 inch filter I've ever used. Would recommend it to anyone else not happy with their current product. Less dusting is always appreciated. My allergies are thankful too.

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 don't have many brand options for this product because of it's configuration. Fortunately, Filtrete makes one and I've had great success for years with Filtrete air filters.

I purchase one of your other filters and seen that it did not preform as well, when I purchase the Healthy living filter, I saw a big difference, my wife were able to sleep better at night and there was less dust on top of my frig,

Space between rails in Lennox furnace for their 5” filter is only 4 7/16”. The filtrete 5” filter is 4 11/16” thick. Going to try filtrete 4” filter that is 4.31” thick.

We have been using these for years, living in Florida and believe that these filters keep down the amount of pollen from outside and dander from our 2 dogs inside.

Purchased this after some work on air conditioner. I will continue to purchase these filters as opposed to the cheap ones. Improvements in odor, dust.