Cast acrylic sheets that have been given a matte finish on the surface are the basis for frosted acrylic sheets. The surface treatment makes the sheet appear milky or frosted by diffusing the light that strikes it. Semi-transparent and light-diffusing frosted acrylic gives off a milky appearance. Although it is not entirely opaque, it does offer privacy. As a result, frosted acrylic sheets are also referred to as milky white acrylic sheets or frosted plexiglass.
Do you require translucent, light-filtering material that provides privacy? If so, frosted acrylic sheets might be your best choice.