Please make sure to read the description of the item that you are purchasing. We sell actual items and vintage advertising and much more. The ads are great for collectors, framing, identification or even gifts of nostalgia. Happy shopping!
National Warm Air Heating Association, Columbus Ohio. black and white ad 8 x 12 inches. recirculating warm air installed according to he Standard code. Healthful heat -it's in the air. A home built for heating research