20x25x1 (19.6 x 24.6) Filtrete 1250 Ultra Allergen Filter by 3M (4 Pack)

These are great air conditioning filters, but your system has to be designed to use them. They are very expensive for filters, but they do what they were designed for.It did catch me by surprise that that I had to pay a shipping fee, I did not notice it until I was checking out so i went ahead with the purchase. In the future I will have to compare the price with shipping against Home Depot, and Lowe's stores.

I love these filters and have been using them for many years now! I have seen that they have discontinued is this true? They are getting very expensive!

Excellent!!!

I buy my filters online because I like to buy about 4 months worth and not crazy about driving in our congested area. These are a little pricey, but our indoor air can be alot worse than outside and since we work out of our home I thought it would be wise to improve our air quality we work in.

love these!!

These seem like quality filters for less cost than the home improvement stores. I installed one about two months ago with no problems.

YUP!

These filters work great. Highly recommend.