Skip to product information
1 of 3

Mattress Foundation

Mattress Foundation

The classic box spring completely reimagined. Ultra sturdy support that’s easy to assemble.


0% APR financing as low as
30% Discount Applied

Ships in 1-2 business Days | 100 Night Trial


Frame: Laminated Veneer Lumber (LVL), Fiberboard
Fabric: 100% Polyester

Free Shipping & Easy Returns

  • Ships in 1-2 business days, single package
  • Free Shipping & Easy Returns



  • Twin: 37.5" x 74" x 7.5"
  • Twin XL: 37.5" x 79" x 7.5"
  • Full: 52.5" x 74" x 7.5"
  • Queen: 59.5" x 79" x 7.5"
  • King: 75.5" x 79" x 7.5"
  • Cal King: 71.5" x 83" x 7.5"

Shipping Weight:

  • Twin: 54 lbs.
  • Twin XL: 56 lbs.
  • Full: 69 lbs.
  • Queen: 75 lbs.
  • King: 94 lbs.
  • Cal King: 86 lbs.

Box Size:

  • 78" x 15.5" x 9"

*Dimensions and Weights are approximate


3 Year

Assembly Instructions

Click here to download

View full details

Quick & Easy Assembly

Assemble or disassemble the foundation in minutes. Add optional legs to transform your mattress foundation into a platform bed.

  • Durable badge


    Crafted from high quality engineered wood and wrapped in a luxurious life-proof fabric.

  • Quiet badge


    No tools required. The Lull Foundation can be assembled and disassembled in less than five minutes.

  • Breathability Icon


    The slatted design ensures optimum support & maximum air flow.

Lull Mattress Foundation with Original Mattress

Complete Your Dream Bed

Get the sleep you deserve with the support you need.

Try the foundation stress-free for 100 nights.

The Lull Way...

Free Shipping
100 Night Trial
Quick, Easy Returns
3-Year Warranty
Free Shipping

The Lull Foundation is delivered FREE and ships in 1-2 business days.

100 Night Trial

Try your Lull foundation in your home for 100 nights, stress-free! If you're not 100% satisfied with your sleep experience, arrange a quick and easy return.

Quick, Easy Returns

If you don’t love the Lull Foundation, arrange a quick, stress-free return during the 100 night trial.

3-Year Warranty

Your Lull Foundation is protected by a 3-year limited manufacturer’s warranty.

Woman on Original Lull Mattress and Foundation

Top Questions

What is a mattress foundation?

Think of it as a box spring, but without the springs. A mattress foundation is slatted and ensures your mattress is properly supported. It provides a solid surface for your mattress and prevents sagging.

Can I put the mattress foundation on the floor?

We don't recommend placing the foundation directly on the floor. The Lull Foundation is designed to be used like a box spring and is compatible with most bed frames. Add optional legs to transform your mattress foundation into a platform bed frame.

Do I need a mattress foundation?

We recommend using the Lull Mattress Foundation with your Lull mattress. Like a box spring, a mattress foundation raises the mattress making it easier to get in and out of bed. It also absorbs movement, reduces wear, and creates a flat and firm structure for the mattress to rest on.