The Flanges off general elements command allows to add or edit flanges for ducts and ventilation fittings with a rectangular cross-section.
Flanges of general elements dialog window
The dialog window contains the following items:
Flange size – determines
the flange, which will be added to selected lines. It is possible to copy the
insulation thickness from existing element in the drawing (Copy from fitting > 
option). To delete flange from lines, user
has to specify the Flange size as "0".
Apply to selected objects – edit insulation thickness only for lines that are indicated in the drawing.
Apply to all objects – edit insulation thickness for all lines from the chosen installation type.
Apply only for – the selection of installation kind/type, on which the edition of insulation thickness will be made. This options work with both the Apply to selected objects giving user the opportunity to select lines from the drawing that belong to a certain installation kind and with the Apply to all objects option that allows user to specify the insulation thickness for all lines from the selected kind of installation.