More curtain models:
https://3dsky.org/collection/shared/5249944 

Panel curtains on the rod.
Linen tulle in five natural shades.
The size of one canvas is 1000×3000 mm.

3dsmax 2013 and FBX file with Vray materials
3dsmax 2013 and FBX file with Corona materials
Preview materials from Corona
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All CoronaLegacyMtl materials compatible with older versions of Corona

For Vray versions below 3.1 some materials may not be displayed in MatEditor and during rendering. To fix this set the value to Blinn in the BRDF section.