For production-ready use, we recommend downloading the original file.The converted file is intended only for use in the web viewer. In the original file, the following are fully preserved:✔ full scene structure✔ all materials without simplification✔ accurate texture maps✔ proper object namingIf you plan to use this model in production, choose the source file.Hinges are the hardware used to attach a door to its frame and are the pivot point for opening and closing the door.