What is the maximum length of flexible duct that can be run in commercial space in NJ?

In New Jersey, the maximum length of flexible duct that can be run in commercial spaces is typically limited to 10 feet for most applications, according to the New Jersey Uniform Construction Code and relevant building codes. However, this length may vary based on specific system design, equipment, and local amendments to the code. It's important to consult the latest code provisions and local regulations, as well as a qualified HVAC professional, to ensure compliance with all requirements.