The real question is how tall are your ceilings, these lanterns are 2 feet tall.

That’s a good question. 9 ft ceilings. Is this a no go?! I love these so much.

Would the 18 inch tall lanterns be better

Make a mock up out of cardboard or paper, and then tape them to the ceiling and hang them down to see about length. I ordered pendants one night late at night, without mocking them up first. The clay pendants themselves are the size of a gallon of milk. So they were about four times bigger than my expectation. I was able to make them work by hanging them with the shortest rod that came with them. I like them now, but I really didn’t like them when I first got them. Note to self: no late night ordering.