System 1738® PVC flue gas venting system as manufactured by IPEX USA, LLC shall be a nonmetallic system that is third party certified to UL Standard 1738 “Venting Systems for Gas Burning Appliances, Categories II, III, and IV” in accordance with the NFPA-54 Natural Fuel Gas Code. System 1738® shall offer a full range of pipes, fittings, and termination kits sizes commonly found in venting applications for gas appliances.
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