![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://preview.redd.it/a8cz4plo0wz51.jpg?auto=webp&s=e64a7989b51cfb1a2376dec1ce99908fa9c20fff)
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.
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Billy bookcases from IKEA, with height extensions and glass doors | Bookcase with glass doors, Ikea billy bookcase, Billy bookcase
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How to give an Ikea Billy Bookcase a built-in look. Full tutorial. | Ikea billy bookcase, Billy bookcase, Home office furniture
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