This is a 1929 2-page ad for a Acousti-Celotex featuring Central High School, Detroit MI; Quarton School, Birmingham MI and Grosse Point High School, MI! The size of the ad is approximately 13.5x20inches. The caption for this ad is 'Improve Acoustics' The ad is in good overall condition, with some light wear. This vintage ad would look great framed and displayed! Add it to your collecction today!