
The Foundation 80 — Extra-Wide Modular Horizontal Bookshelf
Modules and planks interlock by hand in 5 to 30 minutes. Bring a second pair of hands, not a toolbox.
Add a Tower or a Foundation later with the same joint. Nothing to redo.
Solid hardwood and plywood with visible grain. No particle board.
Everything you'd ask a carpenter.
- Materials
- PEFC-certified poplar plywood with solid hardwood detailing
- Finishes
- Maple, White Oak, Walnut
- Assembly
- By hand, no tools, 5 to 30 minutes. For tall units, anchor to the wall with standard hardware (not included).
- Lead time
- 26 business days, made to order
- Shipping
- Free in the U.S.
Before you ask.
Do I need tools?
No. Everything assembles by hand in 5 to 30 minutes. If you own an Allen key, it can stay in the drawer.
Does it need to be anchored?
It's freestanding by design. For tall units, homes with children, or seismic zones, we recommend anchoring it to the wall with standard hardware (not included).
Why is my shelf board in two pieces?
Boards are one piece up to 70″. Wider shelves are split into two boards that meet over a module, where the joint is fully supported.
Will the wood match the photos exactly?
Close, not identical. Wood is natural, so tone and grain vary from board to board. That's the point of real wood.
Can I add to it later?
Yes. Every system uses the same joint, so you can extend it sideways or combine it with other configurations.
When will it arrive?
Each system is made to order and ships in 26 business days, free in the U.S.
Can I return it?
It's built for you, so it's final sale. See the refund policy.
Can someone assemble it for me?
Yes. Book a professional through our TaskRabbit partnership.
Wall not exactly this size? Walls rarely are.
Same modules, made to your measurements. Design it online or with an architect, free.
How the system works.



- No tools
- No screws
- No glue
Each shelf board is one piece up to 70″. On wider systems, the board is split into two pieces that meet over a module, so the joint stays supported and discreet.
Wood is a natural material. Differences in tone and grain between boards, and from the photos, are expected. No two systems are identical.
“Fabulous shelf! So easy to put together! Looks stunning in my space!! Thank you!!!!”
“Assembling the bookcase was disconcertingly easy! We're delighted with the result.”
“I am really very happy with the bookshelf. It is beautiful, practical and very easy to assemble. I didn't expect the packages to be so small upon delivery, but that was just perfect as we live on the 3rd floor of a house without elevator.”
“Fast delivery, meticulous packaging, child's play to assemble... 2-metre bookcase assembled in less than 20 minutes! Bravo for this brilliant invention!”
“The piece of furniture is beautiful and delicate, showcasing the room itself as much as the books and other objects placed on it.”
“I am very pleased with the bookshelf; I was able to assemble it on my own in 10 minutes time.”
“Two years ago we bought a bookcase from Perfect Bookshelf and we're very happy with the solution we've installed - we've just recommended two extra floors!”
“Very simple and super efficient system. Ideal for the book lover, sleek and sturdy design. You can fit a lot into it. And assembly is really simple”
“Happy owner of 2 bookcases from your home, we have just moved and I was able to combine them into 1 absolutely splendid corner bookcase.”



