It is possible that the download link provided above does not refer to the intended version.
If you are looking for Vent-Calc, you may try searching for a download link using
Google.
Review
Vent-Calc is developed by mailto:ventcalc2@mail.ru and is used by 6 users of Software Informer. The most popular version of this product among our users is 2.0. The name of the program executable file is Vent-Calc2.exe. The product will soon be reviewed by our informers.
