With Proton announced N95 grade cabin filtered for all existing Proton models, sadly our beloved Proton Preve is left out.

https://www.proton.com/en/promotions/n95-cabin-filter

Existing Proton Preve only has a plastic net as cabin filter, not even a paper type cabin filter, so all the while Preve driver are breathing in unfiltered air.

Here is a photo of a used 3M aircond PM2.5 filter sheet that I taped on top of my Preve cabin filter plastic mat that covered around 80% of the surface.
https://detail.tmall.com/item.htm?id=44089658538

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Last two weeks I made a search on the compatible Preve cabin filter.

I came across this website that allow you to search for cabin filter based on filter dimension.

https://catalog.mann-filter.cn/CN/chi/dimensions

Unfortunately the website is in Chinese, but you can browse it using Chrome and do a website translation to English.

I did a search on the website using the cabin filter dimension that I measured long time ago, and the Proton Preve cabin filter dimension is around 178mm x 200mm x 18mm

With a plus minus 2mm tolerance, I am able to obtain a result.
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A deeper dive into the result shows the cabin filter is for Nissan D50/R50/R50X in China market.
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After that I did a search on Taobao, and found this seller that sells PM2.5 cabin filter for Nissan D50/R50/R50X.

https://item.taobao.com/item.htm?id=582812035769

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One unit of the cabin filter is about RM15 after conversion from RMB, excluding international shipping, which is cheap for me.

I also chat with the Taobao seller and confirmed that this cabin filter is indeed the size within the tolerance.

The seller told me that their filter dimension is around 180mm x 200mm x 20mm.

Therefore I pulled the trigger and purchased 4 unit of the cabin filter.

One week passed and I received the cabin filter, and surprisingly it fits really well into the Preve cabin filter container.

The cabin filter dimension from the Taobao seller is around 198mm x 179mm x 20mm according to my own measurement.

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Not only it fits well, despite the 2mm differences in all the dimension, the cabin filter is also able to slot into the blower firmly.

Next is to test if the PM2.5 filter really works, I have a PM2.5 sensor with me so I gave it a try.
Before aircond turned on, the PM2.5 reading on the sensor is around 20 plus minus.
After aircond turned on, the PM2.5 gradually reduced to around 0 and 1.

With this, I can see that this cabin filter is able to to filter out PM2.5 particulate as advertised.

Luckily I bought 4 of them, hopefully my stock can last me 1 to 2 years.
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