Jalousie Window Replacement, Jalousie windows are a common type of window found in older homes. They have split horizontal slats made of plastic, wood, glass or metal, which open and close at an angle. In this way, the slats on jalousie windows are similar to blinds. https://civilstep.com/jalousie-window-what-is-jalousie-window-types-of-jalousie-windows/