Hard to find this size and Sam’s price is better that the furnace guy

Long lasting and well made

These are good filters and the price is a best I've found. Great deal.

These filters work great. This is the second time I have ordered them.

Definitely fits our need for a filter that helps fight airborne allergies.

This is a dependable product that does what it says

The filter is wider than 4" and does not fit in my system. I was not able to use it.

Just can’t beat the best brand!

I can tell that the air in my home is cleaner than it was before I had this filter.

Have used these before. Exactly as described and really good price