Up for sale is a Pre-Owned fully functional Blue 40 Gallon Whirlpool AO SMITH Water Heater Door- Chamber Door -Burner Door. This door may be used for 30 & 50 Gallon Water Heaters, please look at photos and do your own research74.. Please look at photos. What you see is what you will receive. Please do your research to determine if this item is right for your application. Return accepted only if the item does not match photos or description. I ship fast. Thanks for viewing.