Grease filters shall be

Grease filters shall be

• A. Noncombustible
• B. Combustible
• C. Metalized
• D. Installed at a 90-degree angle

Answer: (A)

Grease filters must be noncombustible. In commercial kitchens, the exhaust system is exposed to high heat and flammable grease, so using noncombustible materials prevents the filter from igniting or feeding a flame. Metal filters, such as stainless steel or aluminum, meet this requirement because they resist heat and can be cleaned regularly. If a filter were combustible, it could ignite and worsen a fire. Metalized filters may still rely on a base material that could be combustible, and orientation (like 90 degrees) doesn’t affect whether the filter material will burn. So, noncombustible is the safe, code-aligned choice.

Grease filters must be noncombustible. In commercial kitchens, the exhaust system is exposed to high heat and flammable grease, so using noncombustible materials prevents the filter from igniting or feeding a flame. Metal filters, such as stainless steel or aluminum, meet this requirement because they resist heat and can be cleaned regularly. If a filter were combustible, it could ignite and worsen a fire. Metalized filters may still rely on a base material that could be combustible, and orientation (like 90 degrees) doesn’t affect whether the filter material will burn. So, noncombustible is the safe, code-aligned choice.