[john d]

Took the pictures Henry05 posted to a window tint shop most of the new car dealers use and that did my rear windows a couple of years ago when my 04 SRX was new.
They recommended a product called Graystone that's a "Premium metal-free window film" with a lifetime warranty made by Johnson Window Film.
Brochure notes it's a (GSN films) whatever that means.
Installed on the inside for $85.00 plus tax for a total of $86.23.
The metal free doesn't add to heat build up.
The metal free shade factor starts at 50% but I really don't notice a darkening effect.
They've seen vandalized unlaminated broken windows that had this film and the glass held to the film rather than shattering into the car.
Sure gives me peace of mind for my passengers, especially my 2 year old granddaughter that's in a cross-belted harnessed car seat.