How old is the louver? According to historians, the louver is approximately 1500 years old. Created during the Middle Ages in Europe, the first construction was thought to be on the rooftops of kitchens providing air circulation and preventing outside elements from penetrating the room. The first louvers were constructed of several types of materials such as old wood or recycled staves from barrels, scrap metal, and ceramic. During this time in more sophisticated construction, designers would fabricate louvers from clay to impersonate human faces or...