![]() Most A19 LED lamps will have their incandescent wattage equivalence values listed. How Much Brightness (Lumens or Watts) Should an A19 Lamp Have? When shopping for LED lamps, continue to look for A19 LED bulbs if you have a fixture or table lamp designed for A19 lamps. Because so many incandescent lamps use the A19 form factor, however, their CFL and LED replacements have continued to adopt the same A19 shape to ensure that they can truly be retrofit replacements in existing A19 fixtures. With the development of energy efficient lighting alternatives, CFL and LED bulbs have come to replace incandescent lamps. Some E26 bulbs come in shapes completely different from a standard A19 or A-style bulb altogether. A19 and E26 refer to different things, but in this case, you will find that all A19 bulbs use E26 lamp bases.īe aware, however, that the opposite does not hold true: not all E26 bulbs will be of A19 shape. A19 bulbs always use E26, but not vice versaĪccording to ANSI standards, A19 bulbs must always use an E26 base for mounting into a light fixture. ![]() ![]() For different bulb wattages, different bulb size maximum dimensions are given: 40W Type 210:ġ08 mm max length, 69.0 mm max diameter 40W Type 211:ġ12.7 mm max length, 69.5 mm max diameter 50W Type 206:ġ00 mm max length, 68.0 mm max diameter 50W Type 211:ġ12.7 mm max length, 69.5 mm max diameter 60W:ġ12.7 mm max length, 69.5 mm max diameter 75W:ġ12.7 mm max length, 69.5 mm max diameter 100W:ġ12.7 mm max length, 69.5 mm max diameterįor the most part, an A19 bulb can be considered to be within its dimensional requirements if it is within 112.7 mm in length, and 69.5 mm in diameter. The standard dimensions of an A19 bulb are governed in North America by the ANSI C79.1 standards. ![]()
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