AS 4254:2002 pdf free download.Ductwork for air-handling systems in buildings. 2.1 DUCT WORK 2.1.1 General The construction and installation specifications in this Standard include the following: (a) Single prescription method requirements. (b) Alternatives. (c) Performance requirements for specific items that are independent of illustrations, stated as depicting items representative of a class of items too broad to be comprehensively illustrated....
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