See the shadebefore it's on.

How to read the numbers

VLT stands for visible light transmission. A 35% film transmits 35% of visible light and blocks the rest, so lower numbers are darker. Factory glass is not clear either — most side windows start around 70–80% VLT before any film goes on, which is why a "70% film" looks almost invisible.

Heat rejected is total solar energy rejected, and it is the number people misjudge most. Heat lives mostly in the infrared band, and rejecting infrared is a property of the film's ceramic particles, not its darkness. That is why a legal 35% ceramic film routinely rejects more heat than an illegal 20% dyed film. The simulator uses our measured figures for nano-ceramic film at each shade.

UV blocked sits at 99% across every shade we install, including the near-clear 70% used on windshields. UV is what fades a dashboard and ages skin on the driver's arm, and blocking it does not require a dark film at all.

Glare cut tracks darkness closely, because glare is visible light. This is the number that matters on an east-west commute at sunrise, and it is the honest argument for going darker on rear glass than on the front.

What is legal in Utah

Under Utah Code 41-6a-1635, front side windows must transmit at least 35% of light, and an officer's meter allows a 5% variance. Windshields need 70% or more across the full face, with darker film permitted only above the AS-1 line or the top four inches. Everything behind the driver — rear side windows and the rear window — can be any darkness, though dual side mirrors are required if the rear glass is tinted. Metallic and mirrored finishes are not allowed on any window.

The simulator turns its legality box red the moment you drop below 35%, because that is the line that gets people cited. If you want darker front sides, a physician-certified medical exemption permits it; bring the paperwork and we will install to what it allows. The full statute, the mirror rule, and how a stop actually plays out are on theUtah window tint law page.

Which shade people actually pick

• 70% — windshields and anyone who wants heat rejection with no visible change. Nearly invisible, still blocks 99% of UV.
• 50% — a light, factory-looking tint. Popular on cars that already have privacy glass in the back.
• 35% — the volume seller and the darkest legal front shade in Utah. Noticeably tinted from outside, completely usable at night.
• 20% — rear glass only if you want to stay legal up front. Common as a rear-match on trucks and SUVs.
• 5% — limo. Rear windows only, and worth being honest with yourself about backing out of a driveway at night.

A very common order here is 35% ceramic on the front doors to stay legal, 20% or 5% behind the driver to match privacy glass, and a 70% ceramic windshield that does most of the heat work without changing how the car looks. Full pricing by vehicle size is on the window tinting page and in theprice list.

What the simulator cannot show you

It renders one scene in one light. Real glass has its own tint, curvature, and thickness; a black interior reads darker than a light one; and film looks different at dusk than at noon. It also cannot show optical clarity, which is the real gap between cheap film and good film — dyed film hazes and eventually goes purple, ceramic stays optically clean for the life of the car. If you are deciding between two shades, come by and look through sample glass in daylight. It takes five minutes and settles it.