This European Standard specifies dimensions of sheet metal air ducts and duct fittings with rectangular cross section. It applies to ductwork used in ventilation and air conditioning systems in buildings subject to human occupancy. The wall thickness of ducts and fittings is not specified in this standard; strength and leakage are dealt with in prEN 1507. The corresponding standard for circular ducts is prEN 1506.
Rregullorja (BE) Nr. 305/2011 e Parlamentit Evropian dhe e Këshillit e datës 9 Mars 2011 që parashtron kushtet e harmonizuara për tregtimin e produkteve të ndërtimit dhe shfuqizimin e Direktivës së Këshillit KEE/89/106
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