What must grease ducts have for clearances to noncombustible materials?

The requirement for grease ducts to have a specific clearance from noncombustible materials is crucial to ensure safety and compliance with the North Carolina Mechanical Code. A clearance of 3 inches is necessary to prevent the risk of fire hazards that can result from heat accumulation. This standard provides enough space for air circulation, helping to dissipate heat and reduce the likelihood of ignition of surrounding materials, even if they are classified as noncombustible.

This 3-inch clearance is also in line with best practices and guidelines established by various safety codes, incorporating considerations for maintenance and inspection access. By adhering to this requirement, not only are the ducts protected, but the overall integrity of the building's fire safety measures is also maintained. Ensuring proper clearances is essential in commercial cooking operations where grease accumulation can pose serious risks.