The product is a textbook titled “Industrial Ventilation: A Manual of Recommended Practice for Design, 27th Edition” published by the American Conference of Governmental Industrial Hygienists in 2010. It covers the subject area of science and is written in English. Authored by ACGIH, this hardcover book provides guidelines and recommendations for the design of industrial ventilation systems, making it a valuable resource for professionals in the field of industrial hygiene and ventilation engineering. With a focus on general principles and practices, this textbook is a must-have for those seeking to enhance their understanding of industrial ventilation systems.