A nice touch in this textbook is the chapter-opening vignettes that hook your interest.
HVAC Duct Wye 8 in to 6 in x 6 in Galvanized Steel Vent Connector Fitting
You will like that this 1st Edition has a more compact and focused index.
8 In. to 6 In. X 6 In. Wye
What stands out about the paperback is the way it bends without breaking.
