What is typically expected from the installation of a grease duct?

The installation of a grease duct is typically expected to be encased and approved to ensure safety and compliance with applicable codes and standards. Grease ducts are essential components in commercial kitchens as they transport heat and combustible grease-laden vapors from cooking appliances to exhaust systems. Encasing the duct helps contain any potential fire hazards that may arise from the grease accumulation, as it provides additional fire resistance.

Using approved materials and methods ensures that the installation meets the relevant safety standards and can withstand the temperature and pressures associated with grease-laden air. This encasement not only helps prevent grease fires but also minimizes the risk of flammable materials contacting the ductwork. Proper approval is crucial for passing inspections and ensuring the entire system operates safely and effectively.

In contrast, being visible at all times is not typically a requirement, as some installations may not be aesthetically pleasing when exposed. Insulation, while important in various applications for thermal management, is not a standard requirement for grease duct installations. Additionally, the duct should not be left exposed to air, as that could lead to grease vapor escaping into the environment, increasing fire risk and reducing efficiency in the duct's function.