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Type I and II Hood Differences TYPE I HOOD TYPE II HOOD a General Kitchen Hood for Collecting and Removing 1

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Type I and II Hood Differences TYPE I HOOD TYPE II HOOD a General Kitchen Hood for Collecting and Removing 1 Full Service Center East Area Service Center 827 7th Street, Room 102 5229 Hazel Avenue, Suite B Sacramento, CA 95814 Fair Oaks, CA 95628 M-F 8:30am - 4:30pm M-Tu. 9:00am - 4:00pm Building Permits & Inspection Division Bradshaw Center North Area Service Center 9700 Goethe Road, Suite A 3331 Peacekeeper Wy, Suite 100 General Information: (916) 875-5296 Sacramento, CA 95827 McClellan, CA 95652 www.building.saccounty.net M-F 8:30am - 4:30pm W-Th. 9:00am - 4:00pm Type I and II Hood Differences TYPE I HOOD TYPE II HOOD A general kitchen hood for collecting and removing 1. A kitchen hood for collecting and removing grease steam, vapor, heat, or odors. and smoke 2. Grease ducts and plenums must be constructed of Ducts and plenums must be constructed of rigid not less than 0.054-inch (1.4 mm) (No. 16 MSG) metallic materials as set forth in Chapter 6, Tables steel or stainless steel at least 0.043 inch (1.12 mm) 6-1, 6-2 and 6-8. (No. 18 MSG) in thickness. 3. Overlapping duct connections of either bell or Joints and seams of duct must be made telescoping type shall be used for field joints of a substantially airtight by using tapes, gasketing, or grease duct, not butt weld connections. other means. 4. A grease duct serving a Type-1 hood that No requirement. penetrates a ceiling, wall or floor shall be enclosed in a duct enclosure from the point of penetration. 5. Air velocity within the duct system shall not be No requirement. more than 2,500 feet (762 m) per minute. 6. (a) Centrifugal exhaust fan outlet (bottom) must be (a) No requirement. (b) No requirement. a minimum of 18 in. ( 457.2 mm) above the roof. (b) Vertical discharge (upblast) exhaust fan must have its grease outlet 40 in. (1.02 m) above the roof. 7. Exhaust outlet must be at least 10 feet (3.05 m) Exhaust outlet must be at least 3 feet (914 mm) horizontally from adjacent buildings, property lines, or from property line; 3 feet (914 mm) from openings air intake openings into any building and must be into the building located at least 10 feet (3.05 m) above the adjoining grade level. 8. Any type of fan, which is UL listed for use in No requirement. grease exhaust systems and is installed in accordance with the terms of its listing and the manufacturer's installation instructions. 9. Hood must be of: Galvanized steel not less than (a) Galvanized steel not less than 0.024-inch (.609 0.043-inch (1.09 mm) (No. 18 gauge) steel. mm) (No. 24 gauge) steel. (b) Copper weighing not (b) Stainless steel having a minimum thickness of less than 24 ounces per square foot. (7.32 kg/m²). 0.037-inch (1.09 mm). (No. 20 MSCG) 10. Ceilings within 18 inches (457 mm) measured No requirement. from the top of the hood must be constructed with materials conforming to limited-combustible material on the hood side. 11. Hoods recessed into the ceiling must be enclosed No requirement. in a duct enclosure. Ceiling must be constructed with materials conforming to limited-combustible material, on the hood side, to a distance of 18 inches (457 mm) measured from the hood at the ceiling line. 12. Approved grease filters shall be Class 1 per SFM No requirement. standard 12-71-1. 13. Capacity of exhaust fan is the appropriate Capacity of exhaust fan is determined by applying formula shown in the formula shown in current adopted code. current adopted code. 14. Fire-extinguishing system is required. No requirement. Document # PM-09 Last update: 4/24/2017 Page 1 of 1 .
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