Ukuphucula Umgangatho woMoya wangaphakathi kunye noLwakhiwo lwe-Ventilation Skylights

Ukuphucula Umgangatho woMoya wangaphakathi kunye noLwakhiwo lwentsimbi lweSkyi-Skylights lweTheyibhile yeMixholo kuMgangatho woMoya weNgaphakathi kunye noMgangatho I-Skylights Ukubaluleka koMgangatho woMoya wangaphakathi Indima yeSakhiwo soLwakhiwo lwe-Skylights Inkqubo yokufakela i-Ventation Skylights yoLwakhiwo lwe-Sitructure Skylights Amacebiso alondoloza ityala lokuSebenza eliQhelekileyo