Opalux® Low Mirror external Sputtered Grey 20 is used where the end user, or specifier, chooses a more neutral tinted appearance, rather than the mirrored look of solar reflective films. However they still achieve a good level of solar heat and glare control.

This film achieves good solar heat and glare control but can still allow vision both ways, and make less visual impact than traditional mirrored films. The film is applied internally and, in daytime, lends the glass a neutral grey lower mirror outside appearance, whilst from the inside, the visual effect, much less noticeable, is a light tint.