Is 4E too wide?

I'm curious, could you elaborate on why you think "4E" might be too wide? Are you referring to a specific application, such as a financial product or a technical standard? If so, what specific aspects of "4E" make you question its suitability? Additionally, what alternatives or narrower options have you considered that might better meet your needs or requirements? Understanding the context and your concerns will help provide a more informed response.