Where can I get the filters?

Search “Zanfun filter” on Amazon and you will get several results. They are contoured like the mask about half circular with port holes. I had to bunch the filter up a bit to get it in one of my masks and it was a perfect fit for another. The masks are cut different but all the pictures of the filters I’ve seen look exactly alike so I’m not sure if you will get any that are cut different from different vendors. I’m betting they all come from the same manufacturer.

Hi, is the filter washable or are there replacements available?

I’ve seen where some people have washed the filter but I haven’t tried it. If you search Zanfun filter you will get several results and order a few exhaust ports also. The masks are cut different so you might have to bunch them up to get the ports to fit the holes. One of my masks they fit perfectly and the other has to be worked in but it works fine. You want exhaust ports with the silicone flap as the ones with filters don’t cover the holes and allow unfiltered air in and out making them useless.

What are the compatible filter and valve to this mask?

The filter is a layer of cotton that can effectively protect against dust. The valve is a model on a filter cotton that comes with the mask.

What is the filter type

Search Zanfun and you will get several options they are about half circular with holes for the exhaust port. Look for m2.5 as the filters that came with all the masks I bought weren’t. Definitely order replacements if they don’t come with them as well as a few exhaust ports. Don’t order the exhaust with a filter you want the ones with the silicone flap that closes off when you inhale. The filtered exhaust vent I received didn’t cover the hole I could see right in under the filter making it useless.