A listed unitary exhaust hood design where the grease removal device is a non-removable assembly that contains an integral fire activated water-wash fire system listed for this purpose.

Study for the NFPA 96/17A Class K Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Fixed baffle hoods are built with a stationary, non-removable grease-removal device inside the hood. When that internal device includes an integral fire-activated water-wash system that is listed for this purpose, it defines a unitary exhaust hood designed specifically to pair a fixed, non-removable grease path with an automatic water-wash fire protection feature. This combination is what the question is describing. Other hood styles don’t typically feature a non-removable grease-removal assembly with an integral water-wash system listed for this purpose, or they rely on removable filters or different configurations, so they don’t fit the description as precisely.