For complete workflow compatibility, we recommend downloading the Original format.The viewer version is intended only for use in the web viewer. In the source file, the following are fully preserved:✔ native scene structure✔ all materials without simplification✔ proper texture maps✔ proper object namingIf you plan to use this model in production, download the source file.White window with wooden windowsill fully opening just grab the frame of the wing and rotate it on the appropriate axis to open or tilt. To keep realism don t forget to rotate the handle too good luck