The Whirlpool W10804159 Outer Door Glass is used to maintain the elegant appearance and efficiency of the oven. Made from heat-resistant glass, it serves as a shield to protect the appliance and at the same time beautify it. This outer glass panel serves the purpose of insulation to ensure that the required cooking temperatures are well maintained without compromising on the heat that goes to the outer surface of the panel and enables one to monitor the progress of food being cooked without having to open the door.