Window tint · Automotive
Cosmo Sunshield CoolMax Guard
Nano-ceramic film uses very fine ceramic particles to block infrared heat. It gives high heat rejection even in light shades and doesn't interfere with signals. Compare the types of window film.
- For side and rear windows
- Window safety glazing
- Anti-graffiti
- Scratch-resistant coating
- Technology
- Nano-ceramic
- Made for
- Cars and trucks
- Darkness range
- 50% to 80% VLT
Full specs
Source: Cosmo Sunshield automotive window film catalog (January 2026 edition) (opens in a new tab). Our archived copy (PDF) (opens in a new tab).
| Shade | Visible light transmitted Visible light transmitted. Share of visible light that passes through the glass and film. Lower is darker. | Total solar energy rejected Total solar energy rejected. Share of the sun's total energy (heat) kept out. Higher is cooler. | Infrared rejected Infrared rejected. Share of infrared, the heat you feel on your skin, that is blocked, as the maker measures it. | Ultraviolet blocked Ultraviolet blocked. Share of ultraviolet light blocked, the part that fades interiors and harms skin. |
|---|---|---|---|---|
| CoolMax Guard 80 | 80% | 35% | 75% | 99% |
| CoolMax Guard 70 | 70% | 50% | 90% | 99% |
| CoolMax Guard 50 | 50% | 55% | 95% | 99% |
What the column names mean
- VLT
- Visible light transmitted. Share of visible light that passes through the glass and film. Lower is darker.
- TSER
- Total solar energy rejected. Share of the sun's total energy (heat) kept out. Higher is cooler.
- IRR
- Infrared rejected. Share of infrared, the heat you feel on your skin, that is blocked, as the maker measures it.
- UV
- Ultraviolet blocked. Share of ultraviolet light blocked, the part that fades interiors and harms skin.
Figures are measured on single-pane clear glass; results on your windows will vary.
Darkness limits for cars are set by each state. Check your state's tint law before choosing a shade.
Visualize the shades: tint preview and heat rejected
The tint preview shows how each shade darkens the view from inside (visible light transmission, VLT); screens vary, so use it as a guide. Heat rejected is total solar energy rejected (TSER): higher is cooler.
Similar films from other brands
Current nano-ceramic and closely related films for cars from other makers, to compare side by side. Films we sell are listed first.
| Film | Type | VLT | TSER | At TintCenter |
|---|---|---|---|---|
| Color Stable Series (CS IR)3M | Nano-ceramic | 8–70% | 36–56% | |
| Excel IRPASWF | Nano-ceramic | 5–79% | 40–66% | |
| DimensionASWF | Nano-ceramic | 4–77% | 42–79% | |
| Encore Supreme IRAvery Dennison | Nano-ceramic | 5–54% | 52–65% | |
| Encore SupremeAvery Dennison | Nano-ceramic | 8–53% | 48–65% | |
| StratosFormulaOne | Nano-ceramic | 7–69% | 49–65% |
VLT: darkness range (light let through). TSER: heat rejected, lightest to darkest shade. Makers measure differently, so treat close figures as a tie. Browse all brands and films.
More from Cosmo Sunshield
See all 11 current Cosmo Sunshield films
Spot a mistake or know what happened to this line? Tell us and we'll update the record.
TintCenter is independent: no maker pays to appear or be ranked here. We also sell film by the roll, and store links are marked "Shop". How we research and make money.