Oh that’s just the high protein air filter July 6, 2018July 6, 2018 kg4cyx Yeeaarrggghhh!!!! The old “hold it up and see if light passes through” test fails as well. I stuffed it!! Gee I wonder how? Share this:Click to share on Tumblr (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)