El: the complexity of the fire protection function is such that it prevents the passage of flame, hot gases and smoke, but also has a thermal insulation feature. Fire resistance ranges from 30 to 120 minutes.
EW: prevents the passage of flame, smoke and hot gases, and has a heat-suppressive function. Fire resistance ranges from 15 to 60 minutes.
E: prevents the passage of flame, smoke and hot gases. Fire resistance ranges from 30 to 120 minutes.