Bellmouths, for delivering large volumes of air, are used only in hot compartments such as engine rooms.
Umkhonzi wasehotele othetha ngokuvula umlomo ngaphandle kwesandi, ukugqithisa iivolume ezinkulu zomoya ezisetyenziswa kuphela kubushushu bekhompathimenti obunje nge-injini yegumbi.