The vent window can be opened from top to outside, thereby, the utility model has the advantages of smooth smoke exhaust and good smoke exhaust effect.

The Thenardier woman had entrenched herself in one of the angles of the window, and it was she who had just given vent to this roar.

Matelote had mounted to the first floor once more, Grantaire seized her round her waist, and gave vent to long bursts of laughter at the window.