| http://www.w3.org/ns/prov#value | - The insert 22 can be made from a variety of materials, including metal and plastic, but the insert is preferably molded from an opaque polymeric material having high reflectivity, such as acrylonitrile-butadiene-styrene (???ABS???), polycarbonate, ABS blended with polycarbonate, or any other material that meets UL specifications for enclosure of light parts, flammability standards, and electrical
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