Commercial Kitchen Exhaust Duct Size

Kitchen exhaust grease duct.

Commercial kitchen exhaust duct size.

Leading manufacturer of chimney venting and air distribution products for commercial and residential hvac industries for over 80 years. Read on to determine how to size your exhaust and supply fans. A grease duct is a duct that is connected to the kitchen exhaust hood and is specifically designed to vent grease smoke and other harmful contaminants from commercial cooking equipment to the outside of a building. 507 4 type i materials 507 7 hood joints seams penetrations 507 11 grease filters 507 12 size and location 507 13 capacity exhaust air rate calculations.

View the kitchen exhaust duct sizing chart below to determine your ductwork diameter based on range hood cfm. You may outgrow a 24 broiler and swap it out with a 36 or larger model and thus would need the hood to be larger. Are you interested in representing captiveaire and selling our products. Ommercial kitchen design professionals were concerned that the minimum exhaust air ductwork velocity of 1 500 fpm 7 62 m s as required by the national fire protection.

Inventors of the positive pressure chimney system selkirk products meet and exceed the requirements of codes and other manufacturer products. Factor built commercial exhaust hoods which are tested in accordance with ul710 listed labeled and installed in accordance shall not be required to comply with sections. Minimum duct size of 4 recommended duct size of 6 401 600 cfm. For commercial kitchen applications when not specified by code the following guidelines may be used to determine the minimum kitchen hood exhaust cfm.

Also keep in mind that certain code dictates certain spacing between items. At 1200 cfm and above the duct size will depend on the type of fan motor and the length of the duct run but it should never be smaller than 10 inches in diameter. Minimum duct size of 6 recommended duct size of 8.