Ducts Buried in Attic Insulation and Encapsulated Description This guide describes approaches to buryng and encapsulating ducts in unconditioned attics to increase the overall R-value of duct insulation.
Ducts in Dropped Ceilings Description Guide describing method for installing ducts in a duct chase above a dropped ceiling.
Ducts in Raised Ceiling Sections Description Guide describing method for designing and installing ducts in a raised ceiling chase.