VLT, IRR, UVR: what do the tint numbers mean?
Read the specification sheet with confidence before choosing your next window film.
Start with the question behind the number
A tint specification sheet describes several different properties. Visible light, infrared radiation and ultraviolet radiation are different parts of the picture. Comparing the same measurement across films is more useful than treating the largest percentage on the page as an overall score.
VLT: how much visible light passes through
VLT means visible light transmission. A higher percentage means more visible light passes through the film. For example, the X-Films Elite table lists E70 at 70% VLT and E35 at 35% VLT. Use the table to compare their listed light transmission, then ask to see samples. A shade name or a photograph alone cannot tell you how it will look on your glass.
IRR: infrared rejection
IRR means infrared rejection. It is not the same as total solar heat rejection. A listed 99% IRR should not be read as “99% of all heat is blocked” or a promise that a parked car will stay cool. Ask which specification is being quoted when discussing heat performance with an installer.
UVR and GR: two other useful labels
UVR means ultraviolet rejection, while GR means glare reduction. These are separate from visible light transmission and infrared rejection. Read each column for the exact film you are considering instead of assuming one percentage describes every benefit.
Take an exact product name to the shop
Save the series, film code and shade from the current tint page. Ask the installer to confirm availability and show you the chosen film before installation. The published figures are X-Films product specifications; they are a starting point for comparing products, alongside your driving routine, sample viewing and written warranty.