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

Great quality & much cheaper than I can buy in the store with more quantity- win - win in my book!

Great price,great product.

Clean my home air so well

These were too big for my opening. I returned them.

Always a great product. A good price.

Great to have on hand without going to the local supply store.

They work well and reduce dust in my house.

These are really good air filters without blocking to much air flow

Only last one month. Not worth the money