![DIY Billy Bookcase to Built-In: Step-by-Step Beginner's Guide | Ikea billy bookcase, Furniture hacks, Billy bookcase DIY Billy Bookcase to Built-In: Step-by-Step Beginner's Guide | Ikea billy bookcase, Furniture hacks, Billy bookcase](https://i.pinimg.com/originals/de/52/22/de5222be3d85da4fcf428cf6ce89932b.jpg)
DIY Billy Bookcase to Built-In: Step-by-Step Beginner's Guide | Ikea billy bookcase, Furniture hacks, Billy bookcase
![Billy bookcases from IKEA, with height extensions and glass doors | Bookcase with glass doors, Ikea billy bookcase, Billy bookcase Billy bookcases from IKEA, with height extensions and glass doors | Bookcase with glass doors, Ikea billy bookcase, Billy bookcase](https://i.pinimg.com/564x/77/6b/a8/776ba88a78e3b439826032642a69cd63.jpg)
Billy bookcases from IKEA, with height extensions and glass doors | Bookcase with glass doors, Ikea billy bookcase, Billy bookcase
![IKEA Billy/OXBERG Bookcase w Height Extension ut/DRS, 160x30x237 cm, White : Amazon.co.uk: Home & Kitchen IKEA Billy/OXBERG Bookcase w Height Extension ut/DRS, 160x30x237 cm, White : Amazon.co.uk: Home & Kitchen](https://m.media-amazon.com/images/I/81WFOBc2W+L._AC_UF894,1000_QL80_.jpg)
IKEA Billy/OXBERG Bookcase w Height Extension ut/DRS, 160x30x237 cm, White : Amazon.co.uk: Home & Kitchen
![IKEA Billy Bookcase with Height Extension Unit, 40x28x237 cm, White Stained Oak Veneer : Amazon.co.uk: Home & Kitchen IKEA Billy Bookcase with Height Extension Unit, 40x28x237 cm, White Stained Oak Veneer : Amazon.co.uk: Home & Kitchen](https://m.media-amazon.com/images/I/61kaT-bGtyL.jpg)
IKEA Billy Bookcase with Height Extension Unit, 40x28x237 cm, White Stained Oak Veneer : Amazon.co.uk: Home & Kitchen
![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. 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.](https://i.redd.it/a8cz4plo0wz51.jpg)
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.
![IKEA Billy Bookcase with Height Extension Unit, 40x28x237 cm, White Stained Oak Veneer : Amazon.co.uk: Home & Kitchen IKEA Billy Bookcase with Height Extension Unit, 40x28x237 cm, White Stained Oak Veneer : Amazon.co.uk: Home & Kitchen](https://m.media-amazon.com/images/I/71iQXD1NGNL._AC_UF894,1000_QL80_.jpg)