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Mainstays

(3 pack) Mainstays 9-Cube Storage Organizer Bookcase, White

10.5K ratings
(3 pack) Mainstays 9-Cube Storage Organizer Bookcase, White3 pack Mainstays 11 9 Cube Storage Organizer WhiteMainstays 11 9 Cube Storage Organizer EspressoMainstays 11 9 Cube Storage Organizer BlackMainstays 11 9 Cube Storage Organizer Spring PineMainstays 11 9 Cube Storage Organizer WhiteMainstays 11 9 Cube Storage Organizer Warm Walnut

Key item features

  • Nine compartments measure 11 in x 11 in x 11 in each for storage and display.
  • Designed with 4 open-back cubes and 5 closed-back cubes for a mix of cable access and covered backing.
  • Assembled size is 35.38 in W x 11.75 in D x 35.38 in H; assembled weight is 40.48 lb.
  • Top panel and 2 middle shelves support up to 22 lb each; bottom panel supports up to 33 lb.
  • Made with particle board and paperboard in a white finish.
  • Includes wall-attachment hardware for safety and comes with assembly instructions; hammer and Phillips head screwdriver required.
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Customer ratings & reviews

4.3 out of 5 stars
stars
10.5K ratings2,849 reviews
How item rating is calculated
  1. 5 stars73% (7,683)
  2. 4 stars10% (1,092)
  3. 3 stars4% (469)
  4. 2 stars3% (280)
  5. 1 star10% (1,055)

Reviews summary

Pros

  • : Has a stylish appearance.
  • : Offers ample space in a compact design.
  • : Offers quality at an affordable price.
  • : Holds multiple items without tipping.
  • : Assembly process typically takes under an hour.

Neutral

  • : Can be sturdy when assembled correctly, but may be wobbly or flimsy if not.
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Showing 1-3 of 2,849 reviews

Jun 20, 2025
Oreomoo
Item details
Color: Warm Walnut
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Sturdy and easy to assemble.

This unit is the most sturdy I have put together in many years. I have recently moved and have put together many, many items like this recently. It is really sturdy and looks great. It uses actual screws and nails. The directions were easy to understand and follow. This was a great purchase!

Helpful?3C606VRCYIDV15345264074
Jul 23, 2025
Martha
Item details
Color: Espresso
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

"Backpack Storage Center"

Diy-ed it to be a backpack "locker" station for this upcoming school year since I'll have 1 in TK and 1 in 1st grade and I didn't want to have EVERYTHING from school land on the dinner table every day after school. Look's like it'll work to hold backpacks, jackets, and bins for paperwork etc...

Helpful?3C606VRCYIDV15345264074
Jul 3, 2026
susan
Top Reviewer
Item details
Color: White
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Love Mainstays as a brand — affordable and always stylish, fits my aesthetic perfectly. This cube shelf is no exception. I love that you can customize with different colored bins to personalize it exactly how you want. Great value and looks great in the room.

Helpful?3C606VRCYIDV15345264074