Opalux® External Reflective Silver 20 for polycarbonates is a metallised polyester based solar control film designed for exterior-use only on most rigid polycarbonate glazing substrates. This film is of particular use where there is a need to control heat and glare issues. It provides additional benefits such as daytime one-way privacy, uniform outside appearance, winter heating savings, and as with most Opalux® films up to 99% ultraviolet light (UV) filtering.

The film is designed for external application and, in daytime, lends the polycarbonate a silver reflective outside appearance, whilst from the inside, the visual effect, much less noticeable, is a light tint.