For full functionality, we recommend downloading the source format.The viewer version is intended only for use in the web viewer. In the original file, the following are fully preserved:✔ full scene structure✔ unsimplified materials✔ accurate texture maps✔ correct object namesIf you intend to use the asset in a production environment, select the Original format.The model is easy to use and is great for filling and complementing your scenes architectural concepts and renders prototyping storyboarding and sketching quick compositing and kitbashing.