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

11.7K 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

  • Spacious Configuration: This Mainstays organizer features nine 11" x 11" x 11" individual storage cubbies within an overall dimension of 35.31" W x 11.73" D x 35.39" H, offering ample space for various items.
  • Flexible Design: The bookcase incorporates a mixed-back design, including four open-back cubes ideal for cord management and five closed-back cubes for more contained storage of books, clothes, or office essentials.
  • Bin Compatibility: Designed for enhanced organization, the cubbies are fully compatible with Mainstays 10.5" x 10.5" collapsible storage bins, which are available for separate purchase.
  • Sturdy Support: Constructed from durable manufactured wood, the top panel and two middle shelves each support up to 22 lb, while the bottom panel has a higher capacity of up to 33 lb.
  • Secure Assembly: This unit, weighing 40.48 lb, is easy to assemble with included instructions and a video guide (Phillips head screwdriver required), and comes with hardware for safe wall attachment.
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Specs

Bookcase type, Cube BookcasesColor, BlackCompartments, 9Number of shelves, 9Adjustable shelves, NMaterial, Particle board

About this item

Product details

Organize and display everyday items with this Mainstays nine-cube storage organizer. Its mixed-back design is what sets it apart: four open-back cubes make it easier to route cords through the back, while five closed-back cubes give books, clothes, craft supplies, photos, collectibles, and office essentials a more contained spot. Use the cubes for open display or pair them with Mainstays 10.5 in x 10.5 in collapsible storage bins, sold separately, to switch between showing items and tucking them away. The black finish fits comfortably in a living room, family room, home office, playroom, or closet.
  • Cube bookcase with nine 11" x 11" x 11" open storage cubbies
  • Dimensions: 35.31" W x 11.73" D x 35.39" H (40.48 lb)
  • 4 open-back and 5 closed-back cube shelves
  • Compatible with Mainstays 10.5" x 10.5" collapsible storage bins (sold separately)
  • Top panel and 2 middle shelves support up to 22 lb each; bottom panel supports up to 33 lb
  • Materials: manufactured wood
  • Attaches to the wall with included hardware for safety
  • Easy to assemble with included instructions and assembly video guide (Phillips head screwdriver required)
  • Package size: 39.49" x 14.37" x 4.76" (42.68 lb)
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

Specifications

Bookcase type

Cube Bookcases

Color

Black

Compartments

9

Number of shelves

9

Warranty

Warranty information

No Warranty

Warnings

Customer ratings & reviews

4.3 out of 5 stars
stars
11.7K ratings3,040 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars73% (8,598)
  2. 4 stars10% (1,224)
  3. 3 stars4% (517)
  4. 2 stars3% (303)
  5. 1 star10% (1,141)

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.
  • : The unit remains stable when assembled and anchored to wall.

Cons

  • : Panels split and screws pull out during assembly.
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Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
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Showing 1-3 of 3,040 reviews

Sep 14, 2026
Reviewer name: Sharona
Item details
Color: Spring Pine
Multipack quantity: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Love it, but don't care for the back covering

Very useful I purchased two. Con: don't care too much for the back covering maybe a little more sturdy like the unit itself the pieces are flimsy and easily pop off if something is put on the shelves and pushes the back piece off

Helpful?3C606VRCYIDV2660987685
Oct 9, 2026
Reviewer name: jacqueline
Top Reviewer
Item details
Color: Spring Pine
Multipack quantity: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

great for the price

easy to assemble- a little flimsy compared to the same unit i bought last year but it matches perfect.

Helpful?3C606VRCYIDV2660987685
Oct 17, 2026
Reviewer name: Noelle
Item details
Color: Spring Pine
Multipack quantity: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Looks great. Durable for lightweight items.

Exactly what I needed for my yoga studio for students' shoes and personal belongings. I have a small class with only 6-7 people max per class, so this was perfect. Durable enough for lightweight things and supplies I was using it for. Looks great. I know the manual says to use the backing pieces included for cubicle stability, but I only used the middle center one. It's held up perfectly.

Helpful?3C606VRCYIDV2660987685
Current price is $46.84
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