Eurovent 2/4: Sheet metal air ducts – standards for fitting

This document gives recommendations on dimensions of fittings with circular and rectangular cross sections. The previous edition, published in 1983, based on various national manufacturing and contracting standards, was used as a basic document foe the European Standards in CEN/TC 156. This second edition of the Eurovent Recommendation 2/4 is in full accordance with European Standards pr EN 1505 and pr EN 1506. This document is available in English.