Crystalline CR20

The 3M Crystalline CR20 can lower cabin temperature by up to 15 °C under Indian summer sun, thanks to its 64 % TSER and 97‑98 % IR rejection. This dual‑layer technology absorbs and reflects infrared rays while still allowing visible light, so the interior stays cooler without making the roof appear dark. CR20’s core technology uses a proprietary multi‑microporous structure that selectively filters solar energy. The film’s nano‑ceramic pigments reflect infrared wavelengths, while a UV‑blocking layer absorbs 99 % of UV‑A and UV‑B rays, preventing fading of interior fabrics and protecting skin from harmful radiation. In everyday Indian driving, the film reduces reliance on the air‑conditioner, leading to lower fuel consumption and less strain on the vehicle’s electrical system. The limited‑lifetime warranty ensures long‑term performance, provided the film is installed correctly and the glass is cleaned with non‑abrasive products. **

While CR20 delivers excellent IR and UV rejection, the visible light transmission (VLT) is reduced, which may slightly dim the panoramic view compared to an untreated glass. The film’s high performance requires professional installation to avoid bubbles and ensure edge sealing; DIY attempts can lead to premature delamination. Over time, extreme temperature cycles may cause minimal edge lift if not properly maintained. Finally, the limited‑lifetime warranty applies only when installed by an authorized dealer, so non‑standard installers could affect warranty validity. **