With an even better completely new Category Menu. Vessel End Caps (hemispherical, torispherical, semi elliptical).HVAC Rectangular Ducting including reducers, branches, Y's, T's and more transitions.With up to four pipes converging on a common intersection point. In addition to Pipe to Pipe and Pipe to Cone, branches now include Cone to Cone, Cone to Oblique Cone, Cone to Pipe, Pipe to Oblique Cone, Rectangle to Cone, and many more. In Version 4 we have been able to provide many additional features while maintaining the program's original simplicity for the basic user. 'Ease of use' is Plate-n-Sheets guiding principle.