I found a situation that I need some clarification on. An enclosed outside water heater has a solid vent pipe that begins one foot below and away from a kitchen window that can open. The solid pipe extends all the way up to the roof and is a minimum of two feet above it. It is properly capped. The placement of the water in front of that window was done because of lack of space elsewhere and moving it would be really expensive.
How would you call it?