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Washable prefilter A washable prefilter can trap larger air pollutants like dust and hair before they have a chance to clog up a purifiers main HEPA filter

I made a change because the Winix 5500-2 will no longer be available for purchase (at least in the US)

Antara News (in Indonesian)

Levoit Core 300 Air Purifier True HEPA: No | CADR Smoke: 113 | Auto mode: Yes | Filter lifespan: 1 year | Carbon filter: Yes | Washable prefilter: No If you must spend less than $100 on an air purifier, the Levoit Core 300-P is one of the most popular, highly rated items Ive ever encountered on Amazon, with a 4.7-star rating averaged across over 100,000 reviews as of this writing

This doesnt mean they are without serious downsides, but it highlights the complexity of the issues surrounding black markets