Engine Filters

[big8mistake]

Hi guys

Can someone tell me what kind of filters I see on picture ?
Im talking about this small filter under carb filter.

http://vintage-and-classic-honda-s.456789.n3.nabble.com/file/n4039223/IMG_20130410_180100.jpg

Thx

 

[dirtdigger]

Uni makes small filters like that for vents etc. I'm sure other companies make them as well.