National Fire Protection Association

NFPA 96 Standard for Ventiliation Control and Fire Protection of Commercial Cooking Operations 1998 Edition states: 4-8.2.1 Rooftop Termination shall be arranged with or provided with the following...

(c) "The ability to drain grease out of any traps or low points formed in the fan or duct near the termination of the system into a collection container that is noncombustible, closed, rainproff, structurally sound for the service to which it is applied, and will not sustain combustion. A grease collection device that is applied to exhaust system shall not inhibit the performance of any fan.

Exceptions: Grease containers that are evaluated for equivalency with the preceding requirements and listed as such.

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