UV filtering (OP-3) sheet clarity of the finest picture frame glazing, without the heaviness or breakability. It is a safer alternative at half the weight of glass, many times more resistant to impact, easier to handle, and more economical to ship. OP-3 protects from both natural and artificial light. Continuously-manufactured UV filtering (OP-3) sheet filters out 98 percent of damaging UV rays, protecting paper-borne artwork, prints, and documents from fading, yellowing and brittling.
When a slightly reduced level of UV protection is needed, UV Filtering UV3 might be the best solution for you. Both OP3 and UV3 feature this UV protection inherent in their protective formulations.
Why is it important to use a UV-filtering material?
Fabrics and paper become brittle, fade in color, or turn yellow when exposed to sunlight. Those changes are mainly due to exposure to the UV-light in solar radiation. If a “Probable Relative Damage” (PRD) factor is assigned for different wavelengths of light, the shortest UV rays would rank highest and the factor would decrease exponentially with increasing wavelength. For example, the PRD factor for UV-light of 300 nanometers (nm) would be approximately eight, for UV-light of 380 nm, one, and for visible green light of 500 nm, .03. This illustrates the importance of filtering out UV light to protect valuable framables.
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