I JULI®Umbhobho weventilation we-layflat wetonela uhlala usetyenziswa phantsi komhlaba ngokuvuthuza komoya (uxinzelelo olulungileyo) ovela kwitonela engaphandle, obonelela ngomoya ococekileyo owaneleyo weprojekthi yetonela ukuqinisekisa ukhuseleko lomsebenzi.