> Select a metal sputtered film for best heat rejection. It has a
super thin
> application of metal applied. An application of space age
technology.  Also
> the new materials have a special scratch resistant coating. Helps in
scratch
> control but doesn't stop it.

but be wary ... if you like gizmos and gadgets, like handheld
walkie-talkie radios (cb or ham) or radar detectors, this metal film
WILL interfere with your reception. don't know about transmitting. but
i do know a radar detector doesn't work well at all behind this stuff.
:)  <yeah. right. like a bus goes fast enough to NEED a radar
detector! ;)