Mainstays 12 Cube Storage Organizer Bookcase, Black
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Mainstays

Mainstays 12 Cube Storage Organizer Bookcase, Black

677 ratings
Mainstays 12 Cube Storage Organizer Bookcase, BlackMainstays 11 12 Cube Storage Organizer BlackMainstays 11 12 Cube Storage Organizer Warm WalnutMainstays 11 12 Cube Storage Organizer Spring PineMainstays 11 12 Cube Storage Organizer White
Actual ColorBlack

Key item features

  • Flexible Cube Design: This 12-cube organizer features twelve 11" x 11" x 11" open storage cubbies. Used vertically or horizontally for flexible placement.
  • Dual Storage Options: Includes six open-back compartments for cord access and six closed-back compartments, ideal for storing books, clothes, and other items.
  • Sturdy Load Capacity: Constructed from manufactured wood. Top panel and two middle shelves support 22 lb each; bottom panel holds up to 33 lb.
  • Practical Dimensions & Safety: Measures 35.31" W x 11.73" D x 47.01" H. Includes hardware for secure wall attachment, suitable for various rooms.
  • Easy Assembly & Bin Compatibility: Assembly is straightforward with included instructions and video guide. Compatible with Mainstays 10.5" x 10.5" collapsible storage bins (sold separately).
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About this item

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Customer ratings & reviews

4.3 out of 5 stars
stars
677 ratings120 reviews
How item rating is calculated
  1. 5 stars68% (463)
  2. 4 stars14% (95)
  3. 3 stars4% (25)
  4. 2 stars2% (16)
  5. 1 star12% (78)

Reviews summary

Pros

  • : Offers good value considering the cost.
  • : Requires minimal effort and time with clear instructions.
  • : Directions are simple and quick to understand.

Neutral

  • : Can be robust, but also shows signs of wear.
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Showing 1-3 of 120 reviews

Jul 13, 2026
Reviewer name: Sherica
Item details
Color: Black
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great item

My only issue was with the box; it was damaged. It was easy to assemble and very sturdy. It's serving its purpose, and I love it.

Helpful?1CSRI6872B2Y13960062297
Jun 30, 2026
Reviewer name: Christopher
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Look no further for a great minimalist solution!!

This is the PERFECT item for displaying models, etc. It's a GREAT item for clothing also with or without fabric drawers. These are easily put together and will also hold books/file folders if you choose - just don't go too heavy. The are 1/2 inch thick particle board. I shored them up with corner brackets, screwed in 1.5 inch caster wheels to the bottom and nailed cut to order black foam core backing to make them stronger too. They can be a bit wobbly but if you sit them in a permanent place, they'll be fine. I incorporated lighting as well to highlight a series of beautiful Star Wars %26 Star Trek items.

Helpful?1CSRI6872B2Y13960062297
Feb 22, 2026
Reviewer name: Samantha
Item details
Color: Black
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Easy to work with

Easy to put together by myself and pretty easy to customize. I bought it to organize my comic books and it works great. Obviously it's not as sturdy as a name brand but since I was going to do a lot of customization on it anyway I just wanted to get it for a good price. I painted it and added some feet and it looks great!

Helpful?1CSRI6872B2Y13960062297
Current price is $64.88
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