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Mesh Filters Prohibited in Commercial Kitchen Ventilation Installations

by Martin Lowe, posted on May 12, 2009
The purpose of this Bulletin is to clarify the reference to "mesh filters" in the NFPA 96 (1998) "Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations".

NFPA 96 (1998) Sentence 3-2.3 states; "Grease filters shall be listed and constructed of steel or listed equivalent material and shall be of rigid construction that will not distort or crush under normal operation, handling, and cleaning conditions. Filters shall be tight fitting and firmly held in place."

Grease filters are defined as "a removable component of the grease removal system designed to capture grease and direct to a safe collection point."

NFPA 96 prohibits mesh filters by stating; "Mesh filters shall not be used."

A mesh filter, also known as a Grease Filter Mesh Type in NFPA 96, is defined as "a general-purpose air filter designed to collect and retain lint and grease from the air passing through it. This type of filter is not tested, listed, or acceptable for commercial cooking operations due to the increased fire hazard."

Examples of prohibited mesh-type filters are those found on many residential style kitchen hoods and in the ductwork of forced air furnaces. These filters tend to collect and retain grease without the ability to direct it to a safe collection point.

All grease filters shall be listed and installed in accordance with the manufaurers listing and instructions.

Interpretation Bulletins are published by the Office of the Fire Commissioner, in order to provide direction for the application and interprestation of the Fire Services Act, and pursuant regulations. Where applicable, the Fire Commissioner will issue accompanying approval or interpretative orders, under the authority of Part 1 of the BC Fire Code.

For further information contact: Office of the Fire Commissioner, Ministry of Public Safety and Solicitor General, PO Box 9491 Stn. prov. Govt, 1st Floor - 800 Johnson Street, Victoria BC V8W 9N7. Telephone (250) 356-9000, Fascimilie (250) 356-9019, e-mail: Internet:

AHJ Changes

by Martin Lowe, posted on May 12, 2009

NFPA & BC Fire Code

by Martin Lowe, posted on May 12, 2009

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