Not sure if this is the right section but does anyone around here knows where I can find a mesh or foam type filter? I intend to use it as a dust filter but not the typical dust filter since those are very fine (not suitable for my intended application).

I'll be using it as a custom-made computer case dust filter since I would like to cut it in custom size and shapes.

Was thinking of something like a mesh or foam sold in sheets or in "yard/meter" but just can't seem to find one around.

Should be something like this...

And regular computer dust filters look like this...

Appreciate any inputs!