Commercial Kitchen Exhaust Duct Size

View the kitchen exhaust duct sizing chart below to determine your ductwork diameter based on range hood cfm.

Commercial kitchen exhaust duct size. 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. Sizing an upblast or exhaust fan. 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. 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.

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. Also keep in mind that certain code dictates certain spacing between items. Are you interested in representing captiveaire and selling our products. Use this formula to also determine the size of heat hoods.

Minimum duct size of 6 recommended duct size of 8. Read on to determine how to size your exhaust and supply fans. For commercial kitchen applications when not specified by code the following guidelines may be used to determine the minimum kitchen hood exhaust cfm. Minimum duct size of 4 recommended duct size of 6 401 600 cfm.

Kitchen exhaust grease duct. Leading manufacturer of chimney venting and air distribution products for commercial and residential hvac industries for over 80 years. 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.