3m filtrete can get from parkson(the only place i found), RM28+ per piece. that one actually is for room aircon so it's quite big piece. After install it in my room aircon, there's some left over enough for our persona car lor.


The mesh filter can filter lipas, nyamuk, lalat, tikus and kucing only. Those tiny tiny dirt , it will just straight pass thru.

3M can filter down to 0.3 micron. Human hair is ranging from 40 to 300 micron. So imagine how tiny it can filter.