So I opened the air filter for cleaning. And when I was to put it back I forgot which side goes up <!-- s --><img src="{SMILIES_PATH}/icon_redface.gif" alt="" title="Embarassed" /><!-- s --> <!-- s --><img src="{SMILIES_PATH}/icon_mad.gif" alt="" title="Mad" /><!-- s --> . I think it should go like this but wanted to confirm: