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SAMPLE SPECIFICATION FOR METAL-FAB <br />MODEL NO CHASET"", SERIES 4G, IPIC GREASE DUCT <br />~ <br />The Grease Duct shall be factory prefabricated, double <br />wall type, listed by SBCCI PST & ESI and BOCA ES <br />EVALUATION SERVICE for the venting of grease laden <br />air from kitchen hoods requiring grease duct as <br />described in NFPA 96. The Grease Duct shall be rated <br />for continuous operation at 500° F(260° C) and <br />intermittent operation at 2000° F(1093° C). <br />The inner wall shall be constructed of 0.035" thick Type <br />304 (or optional 316) Stainless Steel. The outer wall <br />(casing) shall be constructed of 0.025 thickAluminized <br />Steel (or optional 0.024" thick Type 304 or 316 Stainless <br />Steel). <br />The Grease Duct shall have an 4" wide annular space <br />between the inner and outer walls which is filled with 4" <br />of high temperature ceramic fiber insulation. <br />The Grease Duct shall be sealed liquid tight by means <br />of a mechanical joint consisting of integral flanges on <br />adjoining sections of pipe, held together with a stainless <br />steel flange band and sealed with Type P080 Sealant. <br />The Grease Duct shall include hood and fan transitions, <br />pipe supports and guides, fittings, cleanout ports, ports <br />for the introduction of fire suppression or washdown <br />nozzles, expansion joints and thimbles for penetration <br />of non-fire rated building members, all as shown on <br />plans or as required to meet local building code <br />requirements. All components of the Grease Duct <br />system shall be provided by the Grease duct <br />manufacturer to ensure that the system meets the <br />requirements of the listing. <br />The Grease Duct shall be listed with SBCCI PST & ESI, <br />BOCA EVALUATION SERVICE, or approved by the <br />local building code authority, as a Two-Hour fire rated <br />system which can be installed at 0 inch clearance to <br />combustible surfaces. The Grease Duct shall be listed <br />to penetrate interior walls or partitions rated up to 2 <br />hours. Such penetrations must be fire stopped in <br />accordance with the manufacturer's instructions using <br />the Model PICPPK fire stop kit. <br />All Grease Duct supports or guides shall be anchored <br />with FM-Stainless Fasteners FIX Epoxy Anchoring <br />System or equal, approved by the building code official. <br />Anchors shall be minimum of 5/8" diameter. <br />The Grease Duct shall be installed in complete <br />compliance with the manufacturer's listed installation <br />instructions. <br />The Grease Duct shall be Model No ChaseT"", Series <br />4G, Grease Duct as manufactured by Metal-Fab, Inc. <br />Wichita KS. <br />MODEL IPIC, SERIES 4G GREASE DUCT PRODUCT INFORMATION CHART <br />~:..,~ <br />Maximum 500°F(260°C) Continuous <br />Operating 2000°F(1100 °C) Intermittent <br />Temperature <br />Inner Wall Size Standard Material <br />Material 6"-36" .035"-304 SS <br /> Optional Material <br /> .035"-316 SS <br />Outer Casing Size Standard Material <br />Material 6"-24" .025" Aluminized Steel <br /> 26"-36" .034" Aluminized Steel <br /> Optional Material <br /> 304 or 316 SS <br />Clearance to Size Clearance: <br />Combustibles 6"-36" ~" <br />Clearance to Size Clearance: <br />Noncombustibles 6"-36" ~" <br />Clearance Chase Not Required When <br />to Interior Installed in accordance with <br />Noncombustible SBCCI PST & ESI Review <br />Chase Report #~9666 or BOCA ES <br /> Research Report #96-37 <br />Insulating Space 4" High Temperature Ceramic Fiber <br />Between Inner & <br />Outer Walls <br />Applicable NFPA 96 <br />References <br />Applications Commercial Kitchen Hood Exhaust <br />