I’ve been making improvements to my Nytro for years, and recently made some vents/ filter housings that others may want to try. I made them with a woven mesh IN the plastic, and they will hold a foam filter as well. My intention is to add a pair to my dash, for goggle warming. My airbox lid has 9 Uni Filter 1” vents, already, so I know they will work perfectly for that too.