This question already has an answer here:
What is the best way to punctuate a range of hyphenated numbers, e.g., sections 12-3 through 12-7?
EDIT: Just to reply to those who marked this as a duplicate, I really fail to see how the post that this question purportedly duplicates is responsive my question. I'm not expressing a misunderstanding of en-dashes and hyphens, but rather asking a question about preferred usage. In fact, the top answer (which I think is correct) suggests not using a dash or a hyphen at all.