3M FX-ST 20 Window Film
Mid-dark FX-ST shade balancing privacy, glare reduction and everyday outward visibility.
3M FX-ST 20 is a mid-dark shade within the 3M FX-ST window film range. Compared with FX-ST 5, it allows more visible light into the cabin while still providing a darker appearance, meaningful privacy and daytime glare reduction.
Compare the darker FX-ST 5 or the lighter FX-ST 35 and FX-ST 50. For a wider technology comparison, return to automotive window tinting.
3M FX-ST 20 Specifications at a Glance
3M reference data on Auto 75 glass: FX-ST 20 is listed at 20% VLT, 99% UV blocking, 57% TSER, 74% glare reduction, 8% IRR and 53% IRER.
3M reference data on 6 mm clear glass: FX-ST 20 is listed at 23% VLT, 99% UV blocking, 40% TSER, 74% glare reduction, 8% IRR and 23% IRER.
Shade position: FX-ST 20 is darker than FX-ST 35 and 50, so it gives more privacy and visible-light reduction while preserving more outward visibility than FX-ST 5. The two TSER values reflect different 3M reference glass systems and should not be treated as interchangeable.
Compare the darker FX-ST 5, the lighter FX-ST 35 and FX-ST 50, or return to the FX-ST range.