This HVAC duct construction standards book is a must-have for anyone looking to improve their central air conditioning system. With information on metal and flexible materials, this SMACNA first edition from 1985 covers everything you need to know for a successful installation. The book is perfect for those in the home improvement and heating, cooling, and air industries, as well as anyone interested in learning about central air conditioning systems.

The duct construction standards book covers topics such as operating sound rating, material, type, finish, and year manufactured. It is an excellent resource for understanding the different types of central air conditioners available and learning how to properly install them. Whether you are a professional or a DIY enthusiast, this book is sure to be helpful in improving your knowledge and skills.