Dear Waseen, Exactly! Don’t be worry with the our traditional window geometric idea in model concept� The “�FenestrationSurface:Detailed” Class List will remains there for each of the designed frames, but the software will recognize which opening area is referenced to certain thermal zone, if indicated, and that’s what matter. Best regards, Arq Carlos Krebs LEED® Accredited Professional Auditor Interno ISO 14.001 PROGRAU/FAUrb/UFPEL +55 (53) 8119-0003 __._,_.___ Posted by: Carlos Krebs <clmkrebs@xxxxxxxxx> Primary EnergyPlus support is found at: http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx The primary EnergyPlus web site is found at: http://www.energyplus.gov The group web site is: http://groups.yahoo.com/group/EnergyPlus_Support/ Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files. EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button. __,_._,___ |