My family is very prone to allergic reactions from inhalants in our home. We have dogs and, of course dust issues and this is one of the best at drawing in and trapping those allergens.

I have used the Filtrete air filters for many years. They have definitely helped with allergies in our home. I can actually tell from how fresh the air is when it is time to replace.

Used the Filtrete 2200 1" MPR filter until we had the furnace/air conditioner system replaced last year which has a 4" filter but the Filtrete 4" filter maximum filtration is a 1550 MPR...wish it came in the 2200 MPR.

I've been buying the Filtrete filters for at least 15 years, and as they've increased the quality of the product, I've moved with them. So far, at 75, with a couple of dogs, and candle burninf, and wood stove, I'm still well. Thank you Filtrete!

Product size states 20x25x4. Inconspicuously designated as slim fit. Actual size is 19.5x24.5x3.25. This is new. I have purchased this product for many years. This is the first time I have encountered this.

Even if you don't run or have a whole house fan unit buying the 12x12 is a great way to a cheap air filter. Just tape a 12x12 Filtrete onto the back of a box fan and you're good to go!

Been using these for 6 years. They do the job but the 6 pack price has increase 60% in that time. If that rate of increase continues think I'll start looking for an alternative.

I have used these filters since I've owned my home for 4 years. You can definitely tell they work! Barely any dust around my house and when I go to change it every 3 months it's definitely dirty!

Expensive but lasts a long time...not the twelve months it says in the ad. We change every three months but we live in the South for the air conditioner runs a bunch.

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.