It is a type of Japanese paper called Shoji which is translucent and is used as windows of doors and dividers. Japanese also uses them to make lanterns.The color and number of fibres can be changed by the SBSAR file.
Elegant Japanese Shoji Screens
Texture Of Japanese Sliding Paper Door Shoji Stock Photo, Picture and Royalty Free Image. Image 18660914.
Asset Pack PBR Materials - Blender Market
Japanese Shoji Screen Paper Texture for Doors and Dividers, Free PBR
Shoji Screen
Texture Of Japanese Sliding Paper Door Shoji Stock Photo, Picture and Royalty Free Image. Image 20010847.
Texture Of Japanese Sliding Paper Door Shoji Stock Photo, Picture and Royalty Free Image. Image 20934863.
Re-papering More Shoji Screens & More Tatami Mats Arrive!
ArtStation - Japanese Shoji Screen Paper for Doors and Dividers