What is the required vertical distance for a vent to terminate above any window or door?

The required vertical distance for a vent to terminate above any window or door is 3 feet. This regulation is in place primarily for safety and odor control purposes. It prevents any potential fumes or gases from venting into the living space through openings like doors and windows, which could compromise indoor air quality and pose health risks.

By ensuring that the vent terminates at least 3 feet above these openings, it creates a sufficient buffer that helps direct any escaping gases upwards, reducing the likelihood of them being drawn back into the building. This standard is part of plumbing codes to promote safe building practices and ensure the overall well-being of occupants in a structure.