Vertical blinds for the attic window
____
To rotate all slats at once: select the slat object, in editable poly select the elements mode, select all the elements of the object, select select and rotate (E key), select use pivot point center, rotate the slats along the Z axis
____
Renders in the preview are made in Corona Render 12
Conversion of materials for V-Ray tested on render
___
All textures, materials and objects have logical names, textures are seamless
____
Format: Max2014+Fbx
Render: Corona v12 (LegacyMtl),Vray 6

For Corona render, it is recommended to install version no lower than 1.5, since the glossiness of materials is configured taking into account PBR

In V-Ray lower than 3.1, in the BRDF section there is Microfaset GTR (GGX), be careful. If your version is older than 3.1, the BRDF field will be empty. Select Blinn, Phong or Ward - what is preferable for you.