After several questions regarding AC filter position, I decide to write this post to clarify the exact face position for AC filter in Honda BR-V.
As you see in pic 1, I put a tissue paper inside the running AC fan and it sucked down. That means airflow run from top to bottom. Confirmed by dirts on my filter. Pic 2 shows the top side of the filter, more dirty tha the pic 3 that shows the bottom side of the filter.
For carbonized filter, please place the carbonized face upside.