Can I install new doors on an older BILLY bookcase?
In 2015, IKEA made changes to the BILLY bookcase system and we do not recommend using new doors for the older cabinet frames before 2015.
Today's BILLY bookshelves have different dimensions on the mounts to shelves compared to the bookshelves we sold before 2015. The attachment point for the hinges is also different and we do not recommend using new doors for the older cabinet frames.