About 99% of the incidence of light is absorbed by this high-quality dimmer, which is more than a standard black-out fabric. Astoria FR can be used on both sides. The front side shows a canvas texture. The back side, which is in the same colour, is silk-like. Astoria FR is available in many beautiful living colours and is almost too good to be used as lining material. The black-out fabric is made of 100% flame retardant polyester and thus suitable for contract use.