My window are 5ft high-ceilinged and 5ft widespread. How would this be labeled on a curtain packet? I'm getting new curtains but i'm unsure of what it will say...

I'm getting new curtains but i'm unsure of what it will say on the packet. i want the curtains to close fully and be the right size.
Halloween Exterior Decorations - Please Help!?
Answers:    Curtains are measured by inches, so your window are 60" x 60". You will want the length to be at least 60" or longer. You will want the width to be at lowest 2/3 wider than than the windows so they will bunch up a little when hung - so they want to be at least 100 inches wide. Can run as high as 160" wide. (1 and 2/3 wider than the window) Good luck!