These are great for my needs.
I've lived in NYC for 30 years and can't believe it took me 29 years to buy these for my windows. I live in an apartment and have no control over the heat, which is normally blasting like I'm living in Antartica or something. Its a ridiculous waste of heat and unfortunately I have to keep my windows cracked in the dead of winter just to be able to stand it. And because its NYC those cracked windows mean I battle a constant layer of dust, smog and pollen.<br /><br />So far, these filters are exactly what I need. They fit easily and snuggly in the window and for sure are cutting down heavily on dust and pollen. They do restrict airflow a lot so you won't feel a nice breeze from across the room with these installed. But if you leave them in there is a slow constant exchange of fresh air.
Rating: 5 stars