Mainstays 9-Cube Storage Organizer Bookcase, Black
Mainstays 9-Cube Storage Organizer Bookcase, Black
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Mainstays

Mainstays 9-Cube Storage Organizer Bookcase, Black

11.1K ratings
Mainstays 9-Cube Storage Organizer Bookcase, BlackMainstays 11 9 Cube Storage Organizer BlackMainstays 11 9 Cube Storage Organizer EspressoMainstays 11 9 Cube Storage Organizer Spring PineMainstays 11 9 Cube Storage Organizer WhiteMainstays 11 9 Cube Storage Organizer Warm Walnut
Actual ColorBlack
Pack SizeSingle

Key item features

  • Versatile Cubbies: Features nine 11" x 11" x 11" storage cubbies, including 4 open-back sections for cord routing and 5 closed-back sections, ideal for containing books, craft supplies, or other items.
  • Physical Attributes: Constructed from manufactured wood, this unit measures 35.31" W x 11.73" D x 35.39" H and weighs 40.48 lb.
  • Supported Weight: Each of the top panel and two middle shelves supports up to 22 lb, while the bottom panel can hold up to 33 lb.
  • Adaptable Compatibility: Compatible with Mainstays 10.5" x 10.5" collapsible storage bins (sold separately), offering flexible open display or tucked-away storage options. Wall attachment hardware is included for safety.
  • Effortless Assembly: Assembly is easy with included instructions and a video guide (Phillips head screwdriver required). Its black finish suits various rooms like living areas, home offices, or closets.
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About this item

Product details

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Customer ratings & reviews

4.3 out of 5 stars
stars
11.1K ratings2,944 reviews
How item rating is calculated
  1. 5 stars73% (8,128)
  2. 4 stars10% (1,161)
  3. 3 stars4% (488)
  4. 2 stars3% (291)
  5. 1 star10% (1,101)

Reviews summary

Pros

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

Cons

  • : Panels split and screws pull out during assembly.
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Showing 1-3 of 2,944 reviews

Jun 20, 2025
Reviewer name: Oreomoo
Item details
Color: Warm Walnut
Multipack quantity: 1
5 out of 5 stars
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?3C606VRCYIDV2660987685
Apr 26, 2026
Reviewer name: compnoid
Item details
Color: White
Multipack quantity: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

it was incredibly easy to put together. it would feel more sturdy if i connected it to the wall but honestly holds up fine since i dont pull on it. one of the cheaper storage unit options so feel the price is comparable though maybe slightly over priced (isnt everything though?)

Helpful?3C606VRCYIDV2660987685
Feb 2, 2026
Reviewer name: Lelia
Item details
Color: White
Multipack quantity: 1
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Great heater that heats fast!

Great organizer shelf and we love the Target branded cubby shelfs as it doesn’t have visible particle board showing on one side like others. It’s great for the price. You could always do a DIY project with it to create something in your home or office. It’s not a sturdy shelf but it does the job overall. It can easily scratch and get water damage but its a good shelf for the price, it could probably be a cheaper shelf but its works.

Helpful?3C606VRCYIDV2660987685
Current price is $46.84
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