DIY Homemade Fan Filter Machine using USD 6 in 5 Minutes
The above figure shows the state of the filter after six 6 days of use compared to the new unused filter. Imagine all these dust in your lungs.
Filter To Be Used In An Enclosed Air Conditioned Room
I have done some research.
There is a 3M Filtrete Four pieces of 19cm x 30cm: At RM53 or about USD12; can be fitted to a table fan. Two pieces are needed at RM28 OR USD 6. 3M Filtrete filters come in various sizes.
For reviews on the 3M Filtrete, visit:
This idea is very similar to this NUS idea that was featured in the Star in 2014.
Note: I will not recommend to fit it to the air conditioners. It did not work too well for mine.