This comprehensive yet concise publication provides a convenient reference for regulations in the 2003 International Fuel Gas Code (IFGC). It addresses the design and installation of fuel gas systems and gas-fired appliances through requirements that emphasize performance. This is a comprehensive, excellent reference for code officials, engineers, architects, inspectors, plans examiners, contractors and anyone who needs a better understanding of the 2003 IFGC. This commentary book includes the full text of the Code, in addition to notes and explanations of the Code regulations and implications.