I am happy because my daughter have allergies with this filter it works to recive fresh air.

These work great for our system.

These work well I have been using these for quite a few years now

These are very good filters.

great prize and good product will buy again.

Glad to get a good supply.

Very good filters for allergens at a great price

Disappointed. I just went to change the filter which was clean. Was in for 5 Months. Looked like it was in for a week. Problem is the filter is deteriorating. My wife has been complaining of white dust and now I know why. The filter is breaking down at the folds. I always thought of 3M products as the best and that's why you pay a premium for them. Have to rethink that.

Too expensive

A tad Too big