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See it. Or not? How to make a BILLY bookcase secret door - IKEA Hackers | Hidden door bookcase, Secret room doors, Hidden rooms
![InvisiDoor 32 in. x 80 in. Flush Mount Assembled Maple Unfinished Wood 4-Shelf Bookcase Door in the Hidden Doors department at Lowes.com InvisiDoor 32 in. x 80 in. Flush Mount Assembled Maple Unfinished Wood 4-Shelf Bookcase Door in the Hidden Doors department at Lowes.com](https://mobileimages.lowes.com/productimages/2ad6f11b-e697-4fc1-a734-c0cd3aa5568e/12457575.jpg)
InvisiDoor 32 in. x 80 in. Flush Mount Assembled Maple Unfinished Wood 4-Shelf Bookcase Door in the Hidden Doors department at Lowes.com
![See it. Or not? How to make a BILLY bookcase secret door - IKEA Hackers | Bookcase with glass doors, Hidden door bookcase, Billy bookcase with doors See it. Or not? How to make a BILLY bookcase secret door - IKEA Hackers | Bookcase with glass doors, Hidden door bookcase, Billy bookcase with doors](https://i.pinimg.com/originals/43/11/2f/43112f58fe89551abb6d4501a5e3233d.png)