Altec Filters Compatible with FLT4825 Filter B for Air Purifier Model AC4820 AC4825 AC4870 AC4825DLX AC4850PT AC4300BPTCA AC4900CA CDAP4500BCA CDAP4500WCA AP2200CA BXAP148 (2 Pack)

All the functionality at a fraction of the cost of the name brand ones for my GermGuardian. The price that makes it practical to replace the filters as often as I should for my allergies.

Bought these twice now over the years and will continue! Product fits perfectly and does its job! (We own the germgaurdian model AC4825E)The picture is of an old one to show how well it filters! No difference compared to the name brand filter except cheaper in price and has better reviews.

So I thought I would be thrifty and make my own filters but that was a awful idea. These work great and are a great price. Will purchase again.

Thanks -- great deal to get two filters so next time it needs changing I don't have to wait.

Bought this for a replacement for my Guardian Technologies room HEPA/UV filter. This filter fits great and seems like a decent quality product.

Purchased these expecting them to get here in 2 days ( since I am a Prime Member), it took a week! Docked them a star for it, other than that, I got what I ordered. They work as intended, no defects that I could find and fit my unit.

Using them now, works just as good as the original filter but cheaper! Breathing and sleeping much better at night!

work great and less expensive then new filter

These just don't work as well as the official ones. I had one of these in my room's air-filter, since our house doesn't have central air and it tends to get quite stuffy in my room... and it did nothing. I had to turn it on medium just to get any results, and even then it didn't work as well as the other filter did on low.Pros:* Fits perfectly in the air filter* Looks pretty much the same as the real one* Less expensive than the real onesCons:* Probably not a real HEPA filter* Does little to nothing to actually filter the air* Is a waste of moneySeriously, save your money, don't buy these things. If you've got access to an air compressor with an air blow gun... just use that to blow out your old filters and extend the life-span. They'll still work better than these things.

Better fit than than the GermGardian original filters in an AC4825 air purifier.Better sealing, and the prefilters are much denser than the originals.... as taken from the Altec web site:High Quality: HEPA filters manufactured by Altec Filters with advanced filter technology, which trap allergens, odor, and airborne particles as small as 0.3 micronsTrusting until proven wrong ... is not for everyone !Just because the filters are much less expensive than the overpriced "originals", unless someone can actually test the filter quality, consumers cannot criticize or degrade them.It would be up to laboratory testing to reveal the performance of the HEPA filter used in these filters.Most consumers are fearful to experiment with aftermarket replacement air purifier filters, due to obvious marketing strategies. Sometimes replacement filters are an upgrade or a downgrade.I for one, ... am very satisfied with the product, and will order more ... without hesitation.

It sure fits very tight, but it does fit. I do not know if it's a true HEPA filter either. There is no certification of anyting provided. But it's good for money....having in mind that original filters may not be true HEPA as well.There's no real way to check what's what these days.

I wish I had known about this product sooner. For the price of 1 OEM, you get 2 filters and a whole bunch of charchoal filters (about 6-8, I didn't count). Even though they say not to, I would wash the charcoal filter everytime it got dirty, which was very frequency, and I did it so much I probably went a year without actually buying a new one just because I didn't want to buy a new one due to the cost.. Also this filter fits very snug into my Purifier meaning there is zero chance of unfiltered escaping.

I was very impressed with both the HEPA filters as well as the charcoal inserts.I have both before and these are by far the best for not being an OEM item.But wow, very close to OEM.Thanks