Is there a way to know that you're getting the window film that you were told it'll be?

E.g., if I'm interested in an 78% Visible-Light-Transmission ceramic film with 43% Total Solar Energy Rejection from LLumar, or 71% VLT and 48% TSER from Hüper Optik USA, is there a way to ensure that I'm not instead getting some kind of a knock-off, e.g., a dyed or metallised tint instead, or a ceramic with lower VLT?

I'm probably interested in purchasing a precut kit from the internet or possibly a local shop in Austin, TX. Are there any kind of labels or certificates that are generally provided together with the films?

What about 3M? They seem to have a Precision Fit Program, which offers "Pre-cut, pre-shrunk window tint kits" as 3M™ Precision Fit Kits, but they only appear to advertise it for dealerships; is there a way to just purchase the kit directly? And if there is, what kind of packaging would it have to ensure that the kit is authentic?

  • IMHO, if you want to get authentic, find a dealer. I would think anything you get off of the internet is suspect. The tint which was on my Camaro had tint which was done in TX. It had a little sticker placed under the tint on the driver's side which stated the VLT value on it. It was supposed to be certified at that level. I can tell you the application was done perfectly, so I didn't doubt the sticker. I don't have a real answer for you on this. Hopefully someone with some experience will pipe in. Commented Jun 27, 2015 at 0:06
  • In my experience, all 3M products will have "3M" printed on the peel-off backing.
    – kmarsh
    Commented Jan 4, 2016 at 17:58
  • @kmarsh, actually, that's a good tip! but what about the more intricate details, like the type of the film and the VLT spec?
    – cnst
    Commented Jan 4, 2016 at 18:58
  • Sorry that's all I got. :(
    – kmarsh
    Commented Jan 4, 2016 at 19:32
  • @kmarsh, thinking more about it, the type, spec and production year/week must also be printed in some kind of a small print in certain places on some parts of the peel?
    – cnst
    Commented Jan 4, 2016 at 19:40


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