National Geographic : 1975 Mar
Upper: I windows insulating glass. Lower: soiarcool tsronze renective glass, pato doors and windows. The four-season house and PPG glass. No matter where you live or what the weather, PPG glass lets you enjoy the beauty outside while keep ing you comfortable inside. Twindow insulating glass keeps heat outside in sum mer. And inside in winter. Herculite®K tempered safety glass makes patio and storm doors safe for an ac tive indoor-outdoor family. Solarcool Bronze reflec tive glass cuts the glare that can glance off winter snows or summer lakes. In the bar gain, Solarcool helps air conditioning systems work more efficiently. Inside, mirrors of High Fidelity®float glass expand the spacious, light feeling of such a house even more. The four-season house. It's a beautiful place to live. And PPG glass makes it possible. Send for a free copy of "All American Homes," filled with building ideas. Write PPG Industries, Inc., Dept. G-135, One Gate way Center, Pittsburgh, Pa. 15222. PPG: a Concern for the Future Invite the outside in. With PPG glass.