1978 PPG Solorcool and Twindow Window Glass Ad - Parts of Home's Energy System

This is a 1978 ad for a PPG Solorcool and Twindow Window Glass! The size of the ad is approximately 6.5x10inches. The caption for this ad is 'PPG believes windows should become working parts of your home's energy system' The ad is in great condition. This vintage ad would look great framed and displayed! Add it to your collection today!