Looking for basic 20" Box Fan and 20" Air/Furnace Filters in Chiang Mai

[steveoneal]

Does anyone know where in Chiang Mai we might be able to buy a 20" box fan and air/furnace type air filters to tape to the fan?

Or some versions of the above we can modify to work.

Smoky days are here and combining these two items together works great for filtering dust and smoke particles out of the air in your home.

Thank you!

[masuk]

Most of the hardware stores stock 3M anti allergen and dust filters.

Just cut them to size, They supply tape for attaching. Great for air con filters and catch all the dust we've got in the air right now.

https://www.filtersfast.com/Filtrete-Micro-Allergen-Air-Filter.asp