I wanted to like these, but the size it states is too big for the opening. I don't understand how that is happening, considering I bought the correct size.

[This review was collected as part of a promotion.] This is a nice filter with ultra allergen, bacteria, and virus benefits. We like to keep an extra filter on hand to fit over a box fan for fire season. Works well and fits perfectly.

Great air filter at almost half price from other retailers. The air becomes so fresh at my 3 bedroom home after I replace our old filter with this filter. Highly recommended 3M, which brings the quality.

These filters work fine

Only kind to buy.

Excellent savings

Helps clean air

Best on market

Efficient

A great value