Okusha futhi Okupholile: Le khithi yephaneli yelanga engu-25W ekabili ingakhipha umoya oshisayo futhi ingenise umoya opholile, yehlise ngempumelelo izinga lokushisa lasendlini kanye nomswakama, igcine umoya uhlanzekile.okuyinto efaneleka kakhulu ezindlini zokugcina izithombo ezincane, amahhoko ezinkukhu, amashede, izindlu zezilwane ezifuywayo, i-window exhaust, njll.