It is estimated that every five seconds, one BILLY bookcase is sold somewhere in the world. Pretty impressive considering we launched BILLY in 1979. It’s the booklovers choice that never goes out of style.
 
You can use the extra shelves to make room for more stuff when your storage needs change.
 
Fits BILLY bookcase 31½"wide and 11" deep.
 
The shelf does not fit bookcases purchased in the spring of 2014 or earlier.