Invented by G.Q.F. Manufacturing Co. over 30 years ago, is the most economical incubator available. The radiant heat tube gently warms the inside of the incubator, the air, and the eggs. Thermal action of the heated air flowing out of the exhaust vents in the top of the incubator draws fresh air in through the bottom vent. This thermal airflow also assists the drying of the chicks after they hatch. This design includes two small windows on top for viewing. The wafer thermostat is proven, accurate technology that produces great hatch results.