However, without more context, it's impossible to say for certain. Here's why:
* En could be an abbreviation for something else entirely.
* En24 could be a product name, a code, a measurement, or something else.
To help clarify, please provide more information about where you encountered "En24." For example:
* What is the context of "En24"?
* What is the subject of the discussion?
* Is there any other information associated with "En24"?
With more information, we can determine the meaning of "En" more accurately.