There really isn't any acrylic product that's 100% effective against UV rays, which also come from regular light bulbs, not just the sun. I had a "professional acrylic fabricator" build a case for my tumbler and he was all excited that he was using acrylite, which was very expensive. Truth is, it probably only blocks out about 80% of UV. Even their almost top of the line OP3 P99 product (non-glare, uv filtering) only blocks out about 92% of UV.
For my posters, they're framed with Tru Vue Museum Glass, which blocks out even more, but it's still not 100%. Plus, it's way too thin to use for anything but laying flat in a frame. I also changed out all of my lighting to use led's, which still put out a small amount of UV, but way better than "regular" bulbs.
Generally speaking, acrylic is better than glass for UV protection, but keep your stuff out of direct sunlight regardless.
For my posters, they're framed with Tru Vue Museum Glass, which blocks out even more, but it's still not 100%. Plus, it's way too thin to use for anything but laying flat in a frame. I also changed out all of my lighting to use led's, which still put out a small amount of UV, but way better than "regular" bulbs.
Generally speaking, acrylic is better than glass for UV protection, but keep your stuff out of direct sunlight regardless.