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Custom Size Foundation/Boxspring

Regular price $549.00


Ships in about 2 weeks.

A high-quality wood boxspring/foundation available in custom sizes.

  • Provides support and height to your special size mattress.
  • European black spruce wood construction.
  • Two depth options: 7" or 5"
  • Easy, no tools required assembly.

What's included

  • Wood foundation
  • Hardware
  • Fitted cover

How to order

  1. Select the width, length, and depth of the foundation.
  2. Select quantity and then click "ADD TO CART" button.

*If frame measurements are tight, we generally recommend undersizing the foundation by 1".

Delivery and Shipping

All foundations ship FREE via UPS to your front door.

In-Home Setup & removal is available. Contact Us for more information.

  • Read more about how we ship on the shipping page.
  • Shipping is available to all of the lower 48 US states.

Assembly Instructions

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Discover
  • Google Pay
  • Mastercard
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Using only 'Made in USA' materials, each Foundation is built as ordered by an experienced wood craftsman in Ohio 🇺🇸

FAQ's & important ordering information can be found towards the bottom of this page.

European Black Spruce

This wood retains its shape and integrity longer than traditional pine, providing better support for your mattress.

7" or 5" Depth

Whether it's an antique, European, or custom built bed frame, this foundation should provide a comfortable height.

Easy Assembly, No Tools Required

  1. Connect the side rails to the head/foot boards with the provided bolts and wing nuts.
  2. Lay the slats down with help from velcro.
  3. Slide the fitted cover over it.

Frequently Asked Questions

How do I measure my bed frame correctly?

First, measure the "tight" width and length of the inside of the bed frame. This will be the open space where the rectangular box will fit. Keep in mind that if there are any obstructions pointing out into the open space, like a wood block or post, you have to measure from that point. We want to have a perfectly clear area for a rectangle to fit inside the frame. Once you have your tight measurements, a general rule of thumb is to order the foundation one inch (1") less. This ensures that it will fit comfortably in between the side rails and will not be too tight. For example, if your tight frame measurement is 47" wide and 73" long, order the foundation 46" x 72".

However, this may not be the ideal approach for every single bed frame. If you believe that a 1/2" width or length increment would be ideal, we do have the ability to do that. Please feel free to Contact Us and we'd be happy to assist.

What is the return/refund policy?

As this is a custom made wood product, it is not available for a return or refund.

I have a large size mattress and need a foundation for that. Is it two pieces, or just one?

  • All foundations ordered 60" wide or less will come in one piece.
  • All foundations ordered larger than 60" wide will come in two pieces (split).

In other words, 60" is the maximum width that a foundation will come in one piece. Anything ordered over 60" wide will come as two foundations, which will sit next to each other on the frame (similar to king boxsprings). If you have a bed frame smaller than 60" and would prefer to have two foundations instead of one, please Contact Us and we will assist in getting those ordered correctly.

How do I set it up?

Setup is easy and should take no longer than 20 minutes. No tools are required. Instructions will be provided in the box. You can also find links to them at the top of this page under "Assembly Instructions".

How is it delivered and how long does it take?

  • All foundations ship in a single box via UPS and can be expected approximately 2-3 weeks after order date.
  • In-Home Setup is available can an additional cost. That option can be added on the Checkout page.

Can I get a foundation with special cuts in it?

At this time we only offer rectangle shaped foundations. They cannot be made with corner cuts like angles, notches, or radiuses.

If you have notches or curves in a bed that protrude out into the sleeping space, the box/foundation can only fit up to these obstructions. The rectangular foundation will sit inside any areas that protrude and the mattress can be cut to fit around them.

Where is it made?

All foundations are built by a wood craftsman in Ohio, USA.

Please read the following important items regarding the ordering process:

Returns/Warranty

Due to the custom nature of these foundations, they cannot be returned for a refund. All foundations are warrantied for 1 year, which covers manufacturing defects. For more information regarding the warranty, please visit our Product Warranty page.

Foundation size changes

Custom Mattress Makers allows for size changes up to 24 hours after the order is placed. In an effort to keep lead-times as short as possible, we like to place orders shortly after they're placed. If it is within 24 hours of the order being placed and you need to make a change, please reply to the order confirmation email or email us via the CONTACT US page.

After 24 hours have passed, changes cannot be made to the order.

Cancellations

Similar to the above policy, orders can be cancelled within 24 hours of the order being placed. Within this time period, the order can be cancelled and full purchase amount will be refunded. If you're interested in cancelling an order and it is within 24 hours of the order being placed, please reply to the order confirmation email or email us via the CONTACT US page.

Due to the custom nature of these products, we cannot cancel an order after 24 hours have passed.

Shipping Information

All foundations are built and shipped in Ohio. Once the products ship, a confirmation email/text will be sent to the email/phone number on file. This will include UPS tracking information.

This foundation ships unassembled in a single box. Setup is very simple and should take no longer than 20 minutes. Assembly instructions are included inside the box, which you can also find in the Frequently Asked Questions section on this page.

All standard shipping policies also apply to Foundations, which can be found on our Store Policies page.

Questions?

We're here to help you! Click below to send us an email or give us a call.

Customer Reviews

Based on 11 reviews
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L
Louise A. (Memphis, TN)
Excellent Service

This company will make a bed foundation and mattress for an odd-sized bed. Jake was polite and helpful in helping me measure exactly, and the results fit perfectly! Highly recommend!

R
Roxanne B. (Denver, CO)
Great buy!

We ordered the base only to replace a very old box spring on our antique bed. Nick was a pleasure to work with. The base was expertly made, easy to assemble, exactly the size ordered, and very strong. We are very pleased. Roxanne

J
Jennifer C. (Homosassa, FL)

Custom Size Foundation/Boxspring

R
Robert Y. (Arvada, CO)
Costom Fit

We ordered an out of normal size under mattress box and the fit was right on. Assembly was pretty smooth and easy. Two thumbs up.
Bob

K
Kelsey S. (Atlanta, GA)
Great customer service, fits like a glove

I reached out with a question to the company on a Sunday night not expecting an answer until normal working hours. However, I not only received a response within minutes, but this person also helped create a custom order using half inches then and there on a Sunday night. I was able to complete my order online seamlessly within 10 minutes of sending my first inquiry. Talk about amazing customer service. Our mattress foundation arrived about 3 weeks after the order date and 2 days after shipping confirmation. The directions provided were easy to follow and assembly went smoothly. It fits like a glove in our antique bed frame that my son is using for his new big boy room. He loves his new bed and we have the peace of mind of having a perfectly fitted mattress foundation. Would definitely recommend this company!

s
steve h. (Tucson, AZ)
Very nice foundation

It went together easily, and I am very glad about the advice to undersize it slightly. It works well in our 150-year-old family heirloom bed.

A
Annette N. (Saint Paul, MN)
Foundation/Boxspring

It was easy to put together, though (you heard it before, I'm sure), working with Velco and the short stem staples was tricky. Some of the staples would come unattached. Used a small rubber mallet to hammer back into place.

C
Charles J. (Chevy Chase, MD)

Custom Size Foundation/Boxspring