How to ASSEMBLE the Billy bookcase HEIGHT EXTENSION. - YouTube
Why would there be an extension option for the tall BILLY but not the short one? I bought the extension in the clearance section, already assembled, so no hardware came with it.
Bottom-up Billy - IKEA Hackers
Bottom-up Billy - IKEA Hackers
Billy Bookcase Hack with Library Ladder - The Lilypad Cottage
IKEA Billy Bookcase Built-in Hack - arinsolangeathome
BILLY / OXBERG bookcase w height extension ut/drs, white, 160x30x237 cm - IKEA
DIY Billy Bookcase to Built-In: Step-by-Step Beginner's Guide | Ikea billy bookcase, Furniture hacks, Billy bookcase