Internal hood joints, seams, filter support frames, and appurtenances attached inside the hood shall be _______ or otherwise made greasetight.

Internal hood joints, seams, filter support frames, and appurtenances attached inside the hood shall be _______ or otherwise made greasetight.

• A. Sealed
• B. Grease-free
• C. Interconnected
• D. Accessible

Answer: (A)

Making the interior of the hood grease-tight is the key idea. When joints, seams, filter support frames, and any attached parts inside the hood are sealed, they form a continuous barrier that prevents grease from leaking into the ductwork, collecting in crevices, or spilling onto surfaces. This containment reduces fire risk, simplifies cleaning, and helps maintain a sanitary, efficient ventilation system. Grease-free refers to cleanliness but doesn’t guarantee containment under operation, and terms like interconnected or accessible don’t address stopping grease migration. Sealing these internal joints and attachments directly achieves the required grease-tight condition.

Making the interior of the hood grease-tight is the key idea. When joints, seams, filter support frames, and any attached parts inside the hood are sealed, they form a continuous barrier that prevents grease from leaking into the ductwork, collecting in crevices, or spilling onto surfaces. This containment reduces fire risk, simplifies cleaning, and helps maintain a sanitary, efficient ventilation system. Grease-free refers to cleanliness but doesn’t guarantee containment under operation, and terms like interconnected or accessible don’t address stopping grease migration. Sealing these internal joints and attachments directly achieves the required grease-tight condition.