Serta Cromwell Firm Split Queen-size Mattress and Box Spring Set

by Serta
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ITEM# 13284029
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ITEM#: 13284029

This split box spring queen-size European style pillowtop mattress breathes away heat for a cool, comfortable night's sleep. This is the perfect size mattress for low clearance stairways or to go around tight turns during mattress delivery.

  • Set includes: Mattress, two box springs
  • Support: Firm
  • Materials: Advanced foam and fibers, double tempered steel, wood, cotton
  • Distributes weight evenly and relieves pressure at shoulders and hips
  • Double-tempered support system reacts and conforms to individual contours of body for proper back support
  • Heavy-gauge steel border rod provides enhanced edge support and a firm seating edge
  • Layers of high density support foams provide enhanced firmness
  • Mattress set meets all federally-mandated flammability standards with Serta's patented FireBlocker system
  • Coil count: 504
  • Resistant to dust mites, naturally antimicrobial
  • Temperature-smart memory foam responds to body heat and movement, reshaping to distribute body weight and relieve pressure points to improve circulation
  • Never needs turning


  • Mattress set: 18 inches high x 60 inches wide x 79 inches long
  • Mattress: 9 inches high x 60 inches wide x 79 inches long
  • Each foundation: 9 inches high x 30 inches wide x 79 inches long

White glove home deliveries require 4-hour window to complete delivery; this includes delivery of mattress, set-up in room of your choice, removal of all packaging and debris and removal of old mattress upon request. Please note that there is no surcharge for additional flights of stairs. You will be contacted by the home delivery agent when product is ready for delivery (typically 1 to 3 weeks), we recommend requesting product removal at the same time you schedule your home delivery appointment.

30-Day Comfort Guarantee - If you are not satisfied with your purchase within 30 days, you may return your order for a refund less a re-stocking fee. After 30 days, the mattress cannot be returned.


Mattress Type Innerspring
Thickness 9 Inch
Mattress Top Tight Top
Mattress Support Firm
Product Features Antimicrobial
Recommended Foundation Type Box Spring
Useful Link Mattresses and Memory Foam
Dimensions 78x58x18 in
Warranty 10 year Limited Manufacturer
Model Number 575971-851
Country of Origin United States

Customer Reviews

5 Stars
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1 Stars
  • Most Helpful

  • Serta Cromwell Firm Split Queen-size Mattress Set
    Verified Purchase

    Bed is as described and is comfy. Our main goal was to get a split bottom bed at a reasonable price. This is a good priced bed and delivery was very quick and delivery guys were very careful and efficient. thanx for a great bed buying experience.

    Read More
    purther Apr 4, 2011
  • Great customer service

    Ordered my product, got a call from customer service telling me how I'll be expected to receive my order. One day later, I received a call from delivery department and I was able to choose and schedule the delivery time(4 hours window) online. Very satisfied with this.

    Read More
    novbuyer Nov 9, 2012
  • Most Recent

  • serta cromwell firm split queen size matress and
    Verified Purchase

    i am so happy and sleep so much better and the matress looks like new after almost a year

    Read More
    lyng1 Jan 23, 2016
  • Positive review
    Verified Purchase

    I am very pleased with this mattress set. It works well for me as I love a firm mattress and it is that! If you like it medium or soft this one is not for you. I have a bad back and its great. The delivery was the most impressive part of this. The guys that delivered mine were courteous and helpful. They set it up and left not mess. They even offered to relocate my old set.

    Read More
    mimideck Apr 29, 2013
  • Great Bed
    Verified Purchase

    I was nervous about buying a mattress online. We bought an older beach house with narrow stairs, so we needed a split foundation. When shopping in stores, we couldn't find a name brand bed close to this price. The delivery crew was great - they had it setup in minutes. The bed exceeds my expectations - well built and very comfortable. Thanks Overstock!

    Read More
    jayinada Apr 18, 2013
  • Great Night's Sleep Assured
    Verified Purchase

    This was a wonderful purchase both in quality and price. The gentlemen who delivered it were both courteous and personable. It guarantees our guests a wonderful night's sleep on a firm and comfortable bed. Will be coming back for another one when the need arises.

    Read More
    bmarieg04 Apr 14, 2013
  • Excellent in Fit and Comfort
    Verified Purchase

    My husband and I live in a home that was built in 1925 with a steep stairwell, low doorways and tight turns. Having a queen bed upstairs was only possible with a split box spring set. We are extremely pleased with the Serta Cromwell Firm Split. It fit up the stairs beautifully and now we are having beautiful sleeps! A+ Highly recommended.

    Read More
    foxrose3 Apr 9, 2013

Questions & Answers

  • Q:

    "What does "split" queen-size mattress and box spring set mean?"

    • A:

      Thank you for your question mimideck. It's a spit box spring, which is two pieces instead of one. Please feel free to contact us again with any further questions.

  • Q:

    "Is thiis a no-flip mattress?"

    • A:

      That''s correct. This mattress can be rotated but not flipped.

  • Q:

    "What type of coils are used and what gauge wire?"

    • A:

      Serta says they do not have coil types and are not sure what you mean. There are 504 coils and the wire gauge is 13.5.

Shopping Tips & Inspiration

Shipping & Returns

Contact Information
1-4 week delivery after the item ships:**

Delivered by freight carrier. See Oversized Item Delivery Policy.

Mattress Return Policy:

Mattress Sets are non-returnable upon signature at delivery. Mattresses are non-returnable if opened or taken out of their plastic wrapping.
More Details


This item cannot be shipped to Alaska or Hawaii. More details

Oversized Item Delivery Policy:

This item will be shipped via freight carrier to your home, excluding rural routes, remote areas not in close proximity to areas commonly serviced by freight carriers, islands, APO/FPO addresses, P.O. Boxes, Alaska and Hawaii. Please provide your daytime and evening phone numbers during check out so our carrier can contact you to schedule delivery. Refer to our Oversized Item Delivery Policy for additional information.
More details

For your protection, all orders are screened for security purposes. If your order is selected for review, our Loss Prevention Team may contact you by phone or email. There may be a two business day delay to process your order.

** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.