What is jalousie?

Jalousie is a type of window or door that consists of multiple parallel slats or louvres that can be adjusted to control the amount of light, air, and privacy that enters a room. The slats are usually made of glass, wood, or metal and are held in place by a frame or track system that allows them to be opened or closed in unison or individually.

Jalousie windows were popular in the mid-20th century as a way to provide ventilation and natural light while also maintaining privacy. They were commonly found in tropical and coastal regions where air circulation was important. However, their popularity declined in the late 20th century, due to their tendency to leak air and water, and their lack of insulation and security.

Today, modern jalousie windows have been improved to address these issues and are still used in some regions, especially in warm and humid climates. They are also often used in commercial buildings, such as hotels and hospitals, where air circulation is important.