Louver (noun)

A type of window or vent that consists of angled slats, used to control airflow and light.

Origin:

From the french word louvre, meaning "blind", the term louver refers to a type of window or vent that consists of angled slats, used to control airflow and light.

Examples:

1. He installed louvers on the roof to improve ventilation in the attic.
2. The louvers on the windows allow light to come in while keeping the room private.
3. The air conditioning system uses louvers to control the airflow in the room.
4. The building's design uses louvers on the façade to control the natural light and temperature inside.
5. He had to remove the louvers to clean the window, it was a bit tricky but he managed.