Transparent materials filter less light than light-filtering materials.

Unlike other fabrics, sheer or transparent curtain fabrics offer more possibilities to control eye contact with the outside world than night-time privacy or opacity control.

In this case, classification on a scale of 1 to 4 according to EN14501 will also be derived from the transmission coefficient in its visual characteristics (normal and diffuse components (Tv , n-n; Tv , n-dif)).