This program helps you to create HVAC Flexible Duct by selecting Lines, Arcs, Splines and LWpolylines with two options via specifying the Diameter & Number of fins.

After you have downloaded the trial app, if you want to purchase the full version of the app, run the command FLXSERIAL to obtain the machine codes in the command line and send an email to us. We will get back to you with more details on how to get the full version. Also please read the instructions provided.