Perfect filters and last a good while.

My favorite; they work as advertised

Definitely the best ones to use if you have a compromised immune system.

We find that these filters do the best job at our house. They aren't cheap but worth the money.

I would buy this again. Reasonable priced.

Great Filters, Great Price!

So far superior to cheaper brands

A 4 pack of filters for $39.99 with a merv rating of 12 is not bad at all.

Great product, does very good

You can't buy that quality yet at any price