Hoʻokaʻawale ʻia ka ʻōnaehana kaupaku i loko o ka grille main studs, secondary studs a me ka ʻōnaehana keel nui o luna.
ʻO nā kuʻekuʻe kumu a me nā kumu lalo he mau ʻano ʻano pūnaewele hollow metala kūikawā. ʻO ka ʻōnaehana hoʻokiʻekiʻe grille he pā hale hoʻonani hāmama i hana ʻia e ka hui pū ʻana o nā pahu nui a me nā ʻāpana iwi lalo i nā keʻa kū a me ke ākea.
ʻO ka ʻōnaehana kaupaku Loaʻa ka hopena ventila maikaʻi, ka hana ahi ahi kiʻekiʻe, ka hoʻonohonoho maʻalahi, ka hoʻolālā maʻalahi, nā papa waiwai, ka hopena ʻekolu-dimensional, nā hiʻohiʻona nani ma hope o ka hoʻonaninani a me nā kala nani.