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

Quality 3M filters for your house - filters out the bad stuff so you can breathe good air

Perfect filters and last a good while.

This size filter is often difficult to find in local stores. This was a good price for them as well

Used these filters before great but

The new filters work great

Change often and you will have less problems with your furnace.

Great quality and deal for something you need anyways

WITH SHIPPING AND TAX IT WAS $85.96 FOR 8 FILTERS.

They seem to do a very good job