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From Blueprints to Job Site: How We Lay Out Ductwork A lot of people ask how we know where to position ductwork on a job. It starts with the plans. The blueprints tell us the duct sizes, locations, and layout but once you get on site, there are always real-world hurdles you have to work around. That’s especially true with engineered truss homes, attic systems, and finished basements. Some jobs are wide open and easy to navigate. Others require creative solutions like building chases to hide duct