The file likely refers to a preview package or a community-made add-on for the PMDG 737 series in Microsoft Flight Simulator (MSFS). These files are commonly used by the flight simulation community to distribute updated 3D models, textures, or camera presets for aircraft cabins.
Enhanced cabin lighting that includes fully dimmable interior lights and realistic LED/incandescent effects. cabin_previews.7z
The "detailed features" typically found in such a cabin preview or update include: The file likely refers to a preview package