They are air conditioner filters, they work very well.

Check actual opening size. These were slightly too big and very hard too fit the opening.

This filters were recommended instead of the inexpensive ones that I was using

Good filter at a reduced price

Lasts up to 3 months but have to change every month.

Best filter I have ever found for my home with all of my allergies. Works great.

Fantastic price on a great filter.

Great quality filters at an affordable price.

Hreat filters for my system. I will buy them again.

Excellent filters good price