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Serta Cromwell Firm Full-size Mattress and Box Spring Set

Today: $434.99
Out of stock
ITEM# 11927337

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ITEM#: 11927337

Sleep in comfort on this full-size firm mattress set. The set includes a Sertaedic firm mattress and boxspring and also features antimicrobial fibers to help reduce asthma and allergy triggers.

  • Features antimicrobial fibers to help reduce asthma and allergy triggers
  • Includes a Sertapedic firm mattress and box spring
  • Ideal for those who like a firmer feel to their 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
  • 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 53 inches wide x 75 inches long
  • Mattress: 9 inches high x 53 inches wide x 75 inches long
  • Foundation: 9 inches high x 53 inches wide x 75 inches long

White glove home deliveries require 4-hour window to complete delivery; this includes delivery of mattress, set-up in the 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 the product is ready for delivery (typically 1 to 3 weeks), we recommend requesting product removal at the same time you schedule home delivery appointment.

Photo is for illustration purposes only. 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
Product Features Antimicrobial
Dimensions 18x53x75
Warranty 10 year Limited Manufacturer
Model Number 575971-830

Customer Reviews

5 Stars
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1 Stars
  • Firm and comfortable

    It was an easy process to order and have delivered. Have slept on the bed for over a year now and have no complaints!

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  • Love this bed!

    I recommend for those that like firm, I was shocked that my mate also liked this bed as he doesn't care for firm, he prefers soft. worked out all and all.

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  • excellent

    Got this for our guest room, but did try it out one night, just to see how it slept. It was GREAT. Excellent product.

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  • My sister loves this bed.

    I bought this set for my sister. She absolutely loves it and says it's the most comfortable set she has ever had. I will purchase my next one from overstock too! has generally the best prices for the quality I've found. The frame was missing a caster and overstock took care of it immediately. We are very pleased.

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  • great product

    I am very pleased with this product and have enjoyed many nights of great rest.

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    Avoid buying a mattress online unless you have tested it in the store... I read the other reviews and thought I was getting a good firm mattress set. Very flimsy mattress that does not warrant the price tag. Not quite a sleeper sofa mattress but barely a step better in terms of density and overall support even with box spring. Back hurts after sleeping in it. Definitely no good for two people sleeping in same bed. AVOID THIS ONE AND CHOOSE ANOTHER IF YOU LIKE FIRM SUPPORT!!! Unfortunately non-returnable if not defective.

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  • Works fine

    This is a fairly firm mattress. We wanted one without a pillowtop, and this fit the bill. Well, we wanted a flippable one, but they're about as common as dodo birds these days. The firmness is perfect for my significant other, but a little too firm for me. I've had it about 2.5 months and I think I see some symptoms of sagging already, but only when I really hunt for it, sitting on the floor beside the bed, to check before writing my review.

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  • one sided

    I'm happy with the purchase, but was surprised that the mattress cannot be flipped. I mean there is the top which is normal, but the other side of the mattress is like a boxspring. It is firm, my husband says too firm, but my daughter has not complained.

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  • Great Mattress and Service

    We had such a great experience with this mattress! It is really comfortable and a really good deal but the incredible customer service was even better. They called several times to alert us on the upadates with our mattress shipment and to schedule the delivery. We even missed the first scheduled delivery which was totally our fault and they were very gracious and rescheduled with no problem. They even took our old mattress away which was really helpful. Overall this was a great purchase and for $2 you can't beat having it delivered! (I paid $69 to have another mattress deliverd from a store 10 minutes from my house!) I'll definitely shop with overstock again.

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  • A reasonable deal

    With 10% discount from July 4 week sale, I could not find a better deal with this mid range mattress set. It is quite comfortable and does not look cheap. The firmness is just right for my son and he loves it too. There are some dirty marks on one side of the box spring, but it is totally acceptable and easy to wash them off. It is a good first time buying experience at overstock to me.

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Questions & Answers

Get your product questions answered right here.
  • can you put any mattress on an adjustable box spring

    • Thank you for your interest. No, the current Sertapedic and Perfect Sleeper models are not adjustable base friendly.Please feel free to contact us again with any further questions.

  • how do i use my warranty?

    • For a manufacturer warranty, you may contact the manufacturer with your order information. To use the 10-year extended warranty, you may contact Guardsman''s Warranty Department at 1-800-253-3957 with your warranty contract number.

  • are the box springs included in the warranty?

  • What is the coil guage?

  • what is the coil count

  • does manufacture warranty the mattress?

  • Can the mattress double sided?


Shopping Tips & Inspiration

Shipping & Returns

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.
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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.

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