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?