🔍 Fette Filter 2-Pack of High-Quality HEPA Filters with 8 Carbon Replacement Filters – Compatible with Winix Filter A 115115, Size 21 – Plasma Wave Air Purifier 5300, 6300, 5300-2, 6300-2, P300, C535, AM90 Review

Great except they are 1/8 inch smaller vertically and horizontally than the Winx brand replacement filter otherwise it would have been 5 stars. Use with Winx 6300-2

These replacement parts are a perfect match for our Winix 5300-2. Each box contains 1 HEPA filter and 4 activated carbon filters (total 2 HEPA + 8 activated carbon). It's nice to be able to buy a double pack and save a few bucks compared to buying them individually.

Agree with others that there are some limitations. Listen to your air purifier with an old clogged filter and one with a new filter at the same fan setting and you'll see it's not much different. Pleased with the quality of fit and finish and great price for two replacement filters for my Winix air purifiers.

Replaces my Winix C535. These filters are 50% denser than OEM Winix. can be passed through these filters. It seems odd that a heavier filter would be worse, but when the Winix filters are already HEPA filters, making heavier filters like this reduces the payoff.

Very thick, very decent thickness of the filters, thicker than the Winix brand, you only get less than half the airflow of a Winix filter so performance is at its max, um the same to get a lot of air leaks and also feels heavier than a winix filter. Pro: made of thick, decent material. Disadvantage: lower air throughput (less air can flow through for a longer period of time)

Although the info said it would work with our set we found the filters were just too big and if you force them into blocks. The insert shell creates folds that allow unfiltered air to pass through. In addition, when inserting without a shell, there are gaps at the edges that allow air to flow through the filter again. So beware of anything that works with other products and be prepared to return them. How we are.

They are excellent and a perfect match for our Winix C535. I just wish I could remember the C535 uses 2 hepa filters so technically I should have bought 2 sets instead of 1. Still a good deal considering even at Costco where they discount the OEM version of this Winix branded filter they charge $90 each. the same and I really see no difference. This is a quality filter, just like the original filter that I threw away years later. We will order another one for our second C535.

These are very good filters, they only last about a month and a half as activated carbon filters. The filter should last up to a year (they say it doesn't need to be cleaned) but I've already cleaned it once with the kitchen countertop thinner I use (Dawn's Potent Pot and Pan Spray) and the filter was cleaned very well. Well that was it in the summer months and I just left the filter out in the air overnight to dry. I'm sure you could put it on a heater in the basement to dry in the winter…

Bought for two Winix 5300-2s. tight fit on the edges of the machine; My previously authorized filters required careful use of pull tabs. These filters didn't stay inside by themselves, but kept falling out because the edges of the binder weren't as strong as the original (generally the filter felt less harsh). Unfortunately, I couldn't get a good picture of small size differences between filters with my phone's camera. As I feel they should fit quite snugly on the car (fewer gaps) I have…