Serta Cromwell Firm Queen-size Mattress and Box Spring Set

by Serta
Today: $474.99
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ITEM# 11927335
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ITEM#: 11927335

Sleep in comfort on this firm queen-size mattress set by Serta. This Cromwell Firm mattress features antimicrobial fibers to help reduce asthma and allergy triggers.

  • Bedroom furniture features antimicrobial fibers to help reduce asthma and allergy triggers
  • Set includes: Sertapedic firm mattress, box spring
  • Ideal for those who like a firmer feel to the bed
  • Soft resilient fiber provides a plush surface that breathes away heat and moisture
  • Layers of high density support foams provide enhanced firmness to the sleep set
  • Double-tempered hour-glass steel coil design provides lasting support to the body
  • Serta's heavy-gauge steel border rod provides enhanced edge support and a firm seating edge
  • Mattress set meets all federally-mandated flammability standards with Serta's patented FireBlocker system

  • 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
  • Foundation: 9 inches high x 60 inches wide x 79 inches long

White glove home deliveries require a 4-hour window to complete delivery; this includes delivery of the mattress, set-up in the room of your choice, removal of all packaging and debris and removal of your 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 the 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.

Fabric color, pattern and quilt stitching may vary.

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
Support Firm
Mattress Top Tight Top
Size Queen
Dimensions 18x58x78
Warranty 10 year Limited Manufacturer
Model Number 575971-850
Country of Origin United States

Questions & Answers

  • Q:

    "Does the box spring only come as one piece, or can I get a side by side? A queen sized box spring would not fit up my stairs."

    • A:

      this wil fit easily in any space

    • A:

      Hello brzielinski, This comes with the standard box spring as a set. You would not be able to get a side by side. The dimensions are 9 inches high x 60 inches wide x 79 inches long.

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  • Q:

    "Is there a guarantee that the mattress that I get is unused - not something that has been returned?"

    • A:

      Mine was brand new with tags and wrapped in heavy plastic.

    • A:

      Thank you for your question. All of our mattresses are non returnable, and we guarantee you will receive a new never used mattress.

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  • Q:

    "How thick is the box spring and will the set work on a platform bed?"

    • A:

      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 Foundation: 9 inches high x 60 inches wide x 79 inches long

  • Q:

    "is this a one sided mattress?"

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  • Q:

    "is this a two sided mattress that I can flip?"

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  • Q:

    "Where is this mattress/box spring made?"

  • Q:

    "Does the wood come with the bed? Do you need to buy a frame?"

    • A:

      This is a box spring and mattress set, there is no wood involved here.

  • Q:

    "Is it possible to buy the mattress without the box spring?"

  • Q:

    "what is the gauge number, or thickness of the springs?"

  • Q:

    "what is the coil count?"

  • Q:

    "How do I add white glove service and is there an extra cost?"

    • A:

      Please contact customer service for further assistance

    • A:

      White glove delivery is included. No extra cost.

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  • Q:

    "Does this boxsrping come"

    • A:

      This is a mattress set, so yes, the item comes with both a mattress and a box spring.

  • Q:

    "What is the 'comfort level' rating for this mattress? I need a 4.5-6.5. Also your reviews won't show up; it just keeps me on this page when I click on 'reviews'."

  • Q:

    "Is the matresss separate from the box spring ? In picture, looks like both are stitched together."

  • Q:

    "white glove service with this item?"

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.
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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.