Because I ship large (36 x 44 inch) framed prints to various galleries around the country, glass is not an option due to the risk of breakage. I use standard 1/10 inch acrylic and frame with a 1/3 inch spacer. The prints are mounted on archival foamcore (Gillman Brothers Mountcor) for flatness. One corporate client requested and paid for museum glass but that was for local delivery. Acrylic, with or without a coating absorbs a considerable amount of UV radiation BTW. I've had no complaints about reflection or degradation.
There's useful information on the longevity of pigment inks on various cotton rag papers framed under plain glass, uv filtered glass or acrylic or uncovered at www.wilhelm-research.com. The uncovered prints fare poorly.
Glider canopies are made of a vacuum-formed acrylic and, for a while, the makers were selling tinted ones to protect the pilot from UV radiation - turns out there was little difference other than cost.
Ray Warshaw
There's useful information on the longevity of pigment inks on various cotton rag papers framed under plain glass, uv filtered glass or acrylic or uncovered at www.wilhelm-research.com. The uncovered prints fare poorly.
Glider canopies are made of a vacuum-formed acrylic and, for a while, the makers were selling tinted ones to protect the pilot from UV radiation - turns out there was little difference other than cost.
Ray Warshaw