ISO 7807:1983
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Air distribution Straight circular sheet metal ducts with a lock type spiral seam and straight rectangular sheet metal ducts Dimensions
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
02-27-2019
English, French
07-01-1983
Specifies dimensional characteristics of straight elements of circular and rectangular ducts. Applies to air ducts used in heating, ventilating and air conditioning. Tabulates recommended (R 10 series) and additional sizes for circular ducts (tables 1 and 2) as well as recommended sizes for rectangular ducts (table 3).
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