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The industry's comprehensive Specification for the manufacture and installation of sheet metal ductwork
DW/144 is the Standard Specification for ductwork manufacture and installation and is aligned to all current BS, BS EN ISO and other standards and regulations. It defines specifications for sheet metal ductwork for low, medium and high pressure/velocity air systems and covers ductwork application, materials, classification and air leakage. It highlights the technical information to be provided by system designers to ductwork contractors and looks in detail at rectangular, circular, and flat oval ductwork. It also contains updated information on hangers and supports, smoke and fire dampers, external ductwork, internal duct linings, thermal insulation, air terminal units, with many clear reference tables.
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