Foldable 9 Inch Steel Box Spring

In a Nutshell

Keeping it old school. For extra support under your mattress with a convenient design, look no further than this foldable box spring.

Buy Multiple and Save
Buy 2, Save 3% ($232.79/ea)
Buy 3, Save 5% ($227.99/ea)


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Get into the Details

    • 30-Night Sleep Trial
    • Free Shipping & Easy Returns
    • 1-Year Warranty
  • Profile Height 9″
  • Dimensions
    Sizes Width Length
    Twin 37.8″ 74″
    Twin XL 37.8″ 79″
    Full 53.8″ 74″
    Queen 59.8″ 79″
    King 75.6″ 79″
    Cal King 71.6″ 83″
  • Materials & Certifications

    Foldable Metal Frame, Box Spring Cover

  • Care

    Wash cover according to instructions.

  • Weight Capacity

    Twin and Twin XL: 400 lbs., Full, Queen, King, Cal King: 700 lbs.

  • Bed Frame Compatibility

    Works with all mattress types (innerspring, memory foam, and hybrid). Can be used with an adjustable bed frame when placed directly on slats.

  • Warranty

    1-Year Warranty

    *Warranty applies only to products purchased in the United States.



Sizes Width Length
Twin 39″ 75″
Twin XL 39″ 80″
Full 54″ 75″
Full XL 54″ 80″
Queen 60″ 80″
King 76″ 80″
Cal King 72″ 84″

Wake Up Well Supported

The Platform Bed Frame is perfect for people looking for strong, consistent support for their mattresses, plus lots of underbed storage.

They're loving Lucid


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  • Frequently Asked Questions

    •  What size box spring is right for me?  

      The size of your box spring should match your existing bed frame or mattress. If you're shopping for a totally new set-up, the size of your bed depends on preference and if you're planning to share your bed. Queen and King sizes are the most popular for those with two people in a bed.

    • Is this box spring easy to assemble?  

      Minimal assembly is required for this folding box spring. Just unfold, attach the center support bolts, and put the cover on.

    • How does your 30-night sleep trial work?

      All returns (other than mattresses and adjustable bases) must be initiated within 30 days of delivery. You can also initiate a return if the product has a manufacturing defect or is damaged during transit. If the product is damaged when delivered to your home, you must contact Lucid™ within 48 hours and provide proof of damage. You will be responsible for shipping the item back. To return an online purchase, send us an email at

    • What does the warranty cover?

      This warranty covers any defects in the materials or workmanship, with the exceptions of excessive wear and tear, stains, misuse or improper maintenance, alteration or repair by unauthorized representatives, and damage resulting from transit or handling.

    Still Have Questions?

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    Oh, and One More (Very Big) Thing

    You care about supporting your community, and so do we. We work with charity partners to provide mattresses, pillows, and bedding to people in need. Since 2021, we’ve provided almost 55,000 mattresses for children who were sleeping on the ground.

    To prove our commitment to using business as a force for good, we are a Certified B Corporation®.