This older 3M FX-ST 35 article has been consolidated into the current FX-ST 35 technical guide.

Use the updated 3M FX-ST 35 VLT, TSER and shade guide for the primary explanation of visible-light transmission, solar-energy rejection, UV performance, factory glass and shade selection.

The current guide avoids fixed price and blanket legality claims because installation cost and vehicle requirements depend on the specific vehicle, glass and current rules.