48 inches, go by length much easier to shop that way.

@RL Relocation LLC: So a 48" long linear chandelier would be best for 8' table? So 60" could work for 9' table? Is there a "rule"? I have seen rules based on size of room and width of table (for width of chandeliers), but couldn't find anything regarding linear chandeliers and rectangular tables. Thank you!

yes generally speaking this falls nicely centered over the table. now ceiling height is also a factor when calculating the drop of the fixture.