NEMA announced that ANSI Accredited Standards Committee C78 reaffirmed C78.1430 Slide Projector Lamps, Condensing, Dichroic, 1.65-in. (42 mm), Integral Reflector, Rim Reference Tungsten-Halogen Lamps with GX5.3 Bases. Standard defines dimensional limits and other physical characteristics required to ensure commonality and interchangeability and to assist in proper application of projection lamps.