Curtain Set
Curtains Separate! You don’t need to pick it out of the mesh.

High quality 4k material and textures
Detailed enough for close-up rendering.
For long-range you can turn off turbosmooth.

Who works in V-Ray versions lower than 3.1 be careful in the materials in the BRDF section there is Microfaset GTR ( GGX ) your version is older than 3.1 then the BRDF field will be empty. Choose Blinn Phong or Ward – whichever suits you best

For Corona render it is recommended to install a version of at least 1.5 since the glossiness of materials is configured taking into account PBR

Enjoy using and successful projects =)