ANSI C78.1401-2004 (R2009, R2016) establishes the dimensions essential to the interchangeability of lamps of the double-contact, medium ring (Special B), base-up type. It is not intended to prescribe either operating characteristics or details of design, such as the shape of the ventilation ports or the method of attachment of the prefocus ring to the base.
ANSI C78.1401-2004 (S2023)
Original price was: $49.00.$24.00Current price is: $24.00.
American National Standard for Electric Lamps–Dimensions for Projection Lamps–Double-Contact, Medium Ring (Special B), Base-up Type
American National Standards Institute , 01/06/2016
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