So, I was looking for this thread for the longest time. My go to supplier of Bladwin filters in Lazada ran out of supply. So my next thought was to search for volmax Marketing, Distributor of Baldwin filters in Binondo. I remember buying a couple of filters from them pre-pandemic. However, it seems they relocated to Caloocan already.

If anyone is interested:

114 Boni Serrano St. (between 10th and 11th Avenues), East Grace Park, Caloocan City

Open only Monday to Friday: 730 am to 4pm
No Saturdays

I haven't tried going there yet because its far from my place and I am looking for alternative suppliers instead.