Includes comprehensive instructions on how to fabricate and install fibrous glass duct systems. This illustrated handbook depicts methods of constructing simple straight duct sections plus tees, elbows and complex fittings, installing accessories, connecting ducts to HVAC equipment. Outlines UL 181A approved closure systems, recommended methods of reinforcement, support, and damage repair. Includes a detailed job inspection checklist. (Designed for use in conjunction with the DVD: "Duct Board Fabrication Concepts".)