SPFG, Supreme Picture Framing God
Not a bad guess on my part. Was DenGlas 30%? I recall being shocked that it was less protection and three times the price of regular glass.
Ah, consider this about Museum Glass (plus any other optically coated low reflection glasses like Artglass etc) and Optium acrylic products.I use a similar box primarily as an eye catcher at the design counter for showing clarity and non reflective qualities. Though I haven't really included the entire light spectrum in my talking points, maybe I should. Most if not all of my up-sells to Museum glass are about reduced reflection and clarity, and the price differences between premium clear to conservation clear are so nominal that I rarely find the need to use premium. But having concise talking points around what 99% UV protection actually does relative to the entire package is probably worth having in my hip pocket. I guess I should dust off the cobwebs on some of those grey cells.
See below re 'PRD'.According to Wikipedia, UV is 100-400 nm. So, if a glazing protects against the 280-380 nm range, it's really only protecting against 33.3% of UV light.
Before someone "reminds" us that the most damaging part of light is 280-380 nm, so what? Isn't that exactly what this thread is about? That UV glass does not stop fading because light in the 280-380 nm range is not the only thing that causes fading.
There're a couple of points that dictate the UV frequency to block, and how different levels are / are not of consequence.
I have seen a few TV split faded print POS displays like that over the years here in Australia, though not that particular print.I was clearing out my storage and found the display model that Tru Vue used to give out showing the fading caused by not using True Guard. It's pretty old so it probably has nothing to do with their current policies but at least some of you won't think you've lost your minds. They did make these at one time.