I purchased a pack of 2 Honeywell 20x20x5 merv 11 replacement filters for my Moms home and have placed 1 in service. Will check installed filter in 90 days to see how it is holding up. The price I purchased these 2 filters for was very good & will call on filterbuy in the future.
I like to change my filter monthly.. The price of theses filters makes it possible.. they work great.. the air in my home stays clean and my dust has decreased.
The filters are fine but be prepared for a barrage of emails. These folks overwhelm your inbox with a gazillion emails. I bought 4 filters. I will change a filter every 6 months. That is 2 years until I need new filters. I don't need weekly emails. Go spam somebody else, please.