The product is the 2018 edition paperback of the NFPA 54: National Fuel Gas Code by the National Fire Protection Association (NFPA). This textbook is intended for education and reference purposes, providing information on the subject area of general engineering. Written in English, this trade paperback is authored by the NFPA and published by the National Fire Protection Association. It serves as a valuable resource for students and professionals in the field of fuel gas management.