2010 GT Factory CarLite Tint/Aftermarket Tint for Heat Reduction

I plan on adding Formula One (F1) Pinnacle 35% ceramic window tint to all windows as well as Huper Optik (HO) tranparent ceramic tint on the windshield of my white 2010 GT. However, it appears the windows already have a "CarLite Solar Tint" stamp on all windows and windshield. I have "googled" this item and searched the message boards here to find light/heat rejection specs as well as Visible Light Transmission % (VLT) for this "CarLite Solar Tint" but have not found any info. Please let me know if you might have some usefule info/stats. Since the tint will be put on the car for function than for looks, my question is the factory solar tint just for blocking UV rays or does it help reject a certain amount of light/heat through the windows as well?
 
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