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Important advice on the regulatory testing of ductwork systems
This Guide to Good Practice has clear explanations of the classes of ductwork that must be tested under regulations, acknowledging the re-introduction of high-pressure Class D ductwork to conform to European practice. DW/143 deals with the practical considerations of leakage testing with useful hints and tips. It covers ductwork classification and air leakage and includes a useful example of a completed test sheet.
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