ANSI C78.1407-2004 American National Standard for Electric Lamps—Condenser-Reflector, Four-Pin Prefocus-Base Projection Lamps—Dimensions has been reaffirmed by NEMA. This standard, which specifies dimensions essential to interchangeability of condenser-reflector lamps featuring four-pin prefocus bases, T12 or T14 bulbs, and used in 8 mm motion-picture projectors, is available via download and in hard copy.