This is the exact same scenario as the person who says cut the board in half.
So, I have a 4' × 8', is that gonna be a 2' × 8' or a 4' × 4' ?? The person making the request has a visual in their head, the person cutting it has a visual in his head....... and then there's what is supposed to be a formula. Is it length times width or width times height..... oops I mean width. Which way is horizontal vs vertical. In everyone's book ?? Ince its cut, it's far easier to say I want a 2' sign left to right by 8' top to bottom. If you remain stubborn and want it your way, you could cost the company money over silliness. When you work somewhere, these things really don't matter, until you do this once or twice and cost the owner HIS money. So, like I said in the beginning, get your boss to make a standard for the sake of the company an maybe even your job.
I could see talking about this on break or whatever..... but then, if it were me, it would be up to the intelligent person to go ask the boss and not 1,000 other people.