4' Wide Trilogy Staircase Shelf by Smart Furniture

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Ships out February 27
Color : Espresso
In Stock
Ships out February 27

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Free Standard Ground Shipping: Free

FREE Standard Ground Shipping
Standard ground shipping includes delivery by FedEx or UPS to your door or main lobby. Once shipped, items generally arrive within 2-5 business days. Simple, fast and easy service.

4' Wide Trilogy Staircase Bookshelf
by Smart Furniture

At A Glance:
Similar to our bestselling 6' Wide Trilogy Shelf, this 4' Trilogy shelf fits in places other shelves can't. The Trilogy shelf is a perfect example of staircase furniture. Its angled form makes it ideal for placement underneath a stairway.

What's To Like:

  • Assembly of the Trilogy Shelf is just about the easiest you'll ever experience. No tools needed; all you need is a space on your floor to fit the shelves together like a puzzle (with step-by-step instructions).
  • Because it is a customizable shelf, it can be modified and reconfigured to work anywhere else in your home.
  • Each individual shelving space is capable of holding up to 75 pounds without bowing. That's a crazy-strong shelf!

What's Not to Like:
If you need to store binders, the cubbies of the Trilogy Shelf will be too small.

The Bottom Line:
Smart Shelves are kind of like building blocks. They can be customized in height to the nearest 6" and in length to the nearest foot. That modularity alone makes the Trilogy Shelf a bookshelf worth buying - and it's aesthetically pleasing to boot!


  • Overall: 48" h x 48" w x 9.5" d
  • All Smart Shelves are made of medium density fiberboard with a melamine laminate shell
  • Scratch, dent, and water resistant
  • Made in USA
  • Limited lifetime warranty included

To see the dimensions of individual shelving spaces, click here.

If you have additional questions regarding Smart Furniture's policies in general, please see our FAQs page.

Materials & Measurements

Heat-infused melamine with medium density fiberboard (MDF) core construction ensures long-lasting durability, with the capacity to hold up to 75 lbs. per shelf space. Smart Shelves are scratch, dent, and water resistant.

Overall: 48" h x 48" w x 9.5" d
Click here to view dimensions for individual shelf spaces.


Stephen CulpStephen Culp is the Founder and Chairman of Smart Furniture, which he began in a garage woodshop while attending Stanford University. Stephen's goal was to create a modular shelving system that allowed businesses and consumers to match their furniture to their needs. The result was Smart Shelves- a tool-free system of shelving components that can be custom fit to your individual space.

In addition to designing Smart Shelves and founding Smart Furniture, Stephen Culp is an alumnus of the Peace Corps, an active participant of the non-profit organization Chattanooga STAND, and a Marshall Fellow.

At Smart Furniture, we believe that customer service is what sets us apart. For those who know Stephen, it's not difficult to see why. Our customer-centric way of doing business can be traced directly back to Stephen's civically-oriented way of living. You can read Stephen's complete bio to learn more about his accomplishments (and non-accomplishments - see final paragraph of bio for a laugh).

About The Manufacturer

Smart Furniture LogoSmart Furniture was originally imagined in the mid 1990s by our founder and chairman Stephen Culp, a Naval Reserve Officer, attorney, and former Peace Corps Volunteer. At the time, Culp was a law student at Stanford Law School. The idea for the company came during a visit he made to Yahoo! during its startup years. The incredible growth Yahoo! was experiencing made it difficult for the company to keep up with the constantly changing need for space reconfiguration.

Culp realized that people needed an easily adaptable furniture system that allowed them to reconfigure spaces to their changing needs. In a small workshop in a professor's garage, he set out to create a furniture system that was both simple to assemble and easy to reconfigure as needed. He succeeded and received a patent on his Signature Line system.

By 1998, Smart Furniture was up and running in Palo Alto, California. Smart Furniture relocated to Chattanooga, Tennessee in 2001, where Culp expanded the company and founded a local manufacturing, warehouse, and shipment distribution system for the company's Signature Line products.

Along the way, Culp's experience in the Peace Corps provided a founding principle of Smart Furniture: Help people help themselves. This simple but effective principle was the basis for a business model he called Design on Demand. Smart Furniture's Design on Demand model was created to give both residential and business customers the opportunity to design their own spaces and customize furniture products to their needs, quickly and easily.

The next step was to make the model come alive through technology on our website, Our website's designer tool, free 3-D renderings, and integrated Google Sketchup technologies combined empower our customers to design, order, and receive everything from individual units to interior layouts, quickly and easily.

The result was a revolutionary solution incorporating state-of-the-art design, e-commerce and fulfillment capabilities that can deliver orders from concept to customer within a week. Such a short turnaround time is unheard of in the furniture industry.

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by PowerReviews
Smart Furniture4ft Wide Trilogy Organizing Shelf

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

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(1 of 1 customers found this review helpful)


World Class Customer Service


from Sarasota, FL

About Me Midrange Shopper

Verified Buyer


  • Attractive
  • Comfortable
  • Easy Assembly
  • Ergonomic
  • Fabulous Service
  • Value for the money


    Best Uses

    • Large Rooms
    • Medium Rooms
    • Small Rooms

    Comments about Smart Furniture 4ft Wide Trilogy Organizing Shelf:

    The shelving is unique, versatile and easy to assemble. It's very easy to clean and can be re-configured to suit many different spaces. I get countless compliments on the two units that I use with my fireplace in the middle. They are the focal point in the room!

    Service and delivery comments:

    Karen and Adam provided some of the best service I have ever received. When I expressed the need to exchange the shelves due to a mistake I made when measuring, Karen sent me an e-mail containing not only the revisions to make what I had fit the bill but she also sent a graphic showing the fireplace in the center. I'm in the customer service industry and since great service is so rare, I recognize those few that still provide world class service! I will use Smart Furniture for all of my purchasing needs in the future as a result of the product quality and exceptional service.

    • I Am A:
    • Family Older Kids

    Displaying review 1

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    Environmental Information

    Made 100-percent in the USA, Smart Shelves are cut from panels which are manufactured using 100-percent recovered or recycled raw materials. Our suppliers adhere to ANSI formaldehyde standards and have been certified CARB Phase I compliant. Smart Shelves packaging materials are 100-percent recyclable.

    Shipping & Delivery

    Free Standard Ground Shipping: Free

    FREE Standard Ground Shipping
    Standard ground shipping includes delivery by FedEx or UPS to your door or main lobby. Once shipped, items generally arrive within 2-5 business days. Simple, fast and easy service.

    Product Q&A

    Do you have questions about this product?

    Get answers from real customers and in-house experts with AnswerBox.

    3 Questions | 3 Answers
    Displaying questions 1-3
    • Q:

      can it stand free, stand against the wall or need to be mounted on the wall?
      Asked on 9/28/2015 by Nicole from LA

      1 answer

      • Smart Furniture Staff Reviewer


        Yes, the 4ft Wide Trilogy Shelf can stand free against the wall.

        Answered on 9/29/2015 by Melanie from Smart Furniture
    • Q:

      Is there a way to anchor the shelf to the wall?
      Asked on 7/4/2015 by Laurie

      1 answer

      • Smart Furniture Staff Reviewer


        Yes - you can anchor all Smart Shelves to a wall with the 0.625 in to 0.75 in Wall Clips. These clips are made to keep the unit sitting on the floor from tipping forward and not meant to suspend anything a Smart Shelf unit hanging on the wall.

        Answered on 7/6/2015 by Anonymous
    • Q:

      What are the shipping dimensions and weight of this product?
      Asked on 11/20/2013 by MC

      1 answer

      • Smart Furniture Staff Reviewer


        The 4ft Wide Trilogy Organizing Shelf is 27.5 lb when packed for shipping. The single box is 38.75" x 9.25" x 13.5".

        Answered on 11/21/2013 by Anonymous
    Displaying questions 1-3

    Do you have a question about this product? 


    Smart Shelves come with a lifetime warranty. For more warranty information, please see the Smart Shelves warranty page.