Could you please provide some guidance on what's the best way to ask manufacturers for the ideal 3D Files to provide all 3 LOD models for a fixture? I would like to have an easy explanation to a CAD engineer so that he can immediately translate the LOD in the table below: The model currently does not have any children. All models of a device combined should not exceed a maximum vertices count of 1200 for the default mesh level of detail. There are three level of details that you can define: Table 33. Mesh level of detail LOD Description Folder 3DS / gltf Low Optional; This is the mesh for fixtures that are far away from the camera. It should have 30% of the the vertexes from the default mesh vertex count. 3ds_low / gltf_low Default This is the default mesh that is used for real time visualization in preprogramming tool. It should have the minimum vertex count possible, while still looking like the fixture in 3D. 3ds / gltf High Optional; This is high quality mesh targeting non-realtime applications, where the vertex count is not that important. There is no limit for the vertex count. 3ds_high / gltf_high Low and High meshes definitions are optional. Place the file with the same name in the defined folder. Sending this table was not always accepted without further questions. For example, the polygon count is also asked back.