ANSI/ANSLG C78.21-2003

ANSI/ANSLG C78.21-2003 American National Standard for Electric Lamps - PAR and R Shapes

standard by American National Standards Institute / American National Standard Lighting Group,

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Provides physical and electrical characteristics of the group of incandescent lamps that have PAR and R bulb shapes. Covers lamps with clear, frosted and lens end bulbs, clear and prescription lenses, and with various reflector coatings are covered.

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