Carmel Software has released Duct Size 6.0, an upgrade to its popular commercial HVAC duct design software program. The program, which is based upon the ASHRAE 2001 Fundamentals, allows the user to input a wide variety of information about a duct system, and it displays numerous output reports such as a duct dimension and airflow breakdown report, a material list, a heat loss breakdown report, friction loss breakdown report, sound-power breakdown report and many others. In addition, the user can import a single-line drawing from AutoCad 2004/2005 and export it back to AutoCad as a double-line or 3-D drawing.