Despite the looks, think of the function you want, OP. I moved into a house with large closets that have double doors. They are not sliding, nor are they bi-folding. They are literally just two doors that you pull open, kind of like french doors do, but they are quite wide--like the width of a regular bedroom door. I wish they were bi-folding, so they take up less space when open. Actually, now that I think about it, one room has bi-folding doors, but the other four closets in the house have the large doors. I don't really want to pay to replace all of them, though. But if I did, I'd want them to be bi-folding.