Well my son and I successfully installed our new gas water heater. The new one was fatter but shorter than the old tall skinny one. As a result, the old vent pipe wouldn’t reach down to the new water heater. It was 10:00 pm and the Home Depot was closed. What to do? I wanted hot water in the morning. I had to think quickly. A quick purchase of some generic chicken noodle soup saved the day. Check out my interim water heater duct. Notice the soup cans?