For each class offire resistance anddepending on thetype of fixingthe doorsare certifiedin accordance withUNI9723/CCI/February1990CNVVFwithchecking thetime within whichthe championretainsthe stability"R","E" andthe"thermal insulation"defined byMinisterial Decree11/30/1983paragraph1.11.
In recent years, according to classification of procedures indicated in the UNI EN 13501-2:2005 of 4/1/2005 according to UNI EN 1634-1:2001