A renovation project includes replacing the vent duct for an exhaust fan. What is the maximum allowable length of the vent duct according to the 2024 IRC?
- A10 feet
- B15 feet
- C20 feet
- 25 feet
Exam tip
Be aware of the limitations on vent duct lengths to ensure proper performance.
Why D is correct
The maximum allowable length of the vent duct for an exhaust fan is 25 feet as specified in Section M1503.1.3 of the 2024 IRC.