Recommended
Good
Not Recommended- Sleep cooler through the night with DualCool Technology
- Feel supported with 900 Series Pocketed Coils
- Consistent comfort with the BeautyEdge Foam Encased Edge
Track My Order
My Account
Toggle Nav
Search
1-800-455-1052
Live Chat
King Serta iComfort CF4000 Firm Mattress
King Serta iComfort CF4000 Firm Mattress
From $3,299.00
To $6,445.00
$3299
$3299
$2599
$2199
Reg: $3,699.00
You save $400.00!
Reg: $3,699.00
You save $400.00!
Reg: $2,999.00
You save $400.00!
Reg: $2,599.00
You save $400.00!
$68.73/mo suggested payments with 48 months special financing.
$68.73/mo suggested payments with 48 months special financing.
$72.19/mo suggested payments with 36 months special financing.
$61.08/mo suggested payments with 36 months special financing.
Details
Comfort This describes how a mattress feels. The Comfort Scale rating is based on how the cushioning materials conform to the body's shape. The higher the number the softer the mattress.
- Medium
- Comfort Scale Number 5
Quilt - Top of Mattress This is the outside cover on the top of the mattress. It covers and protects the comfort and support layers inside.
Comfort - Padding Layers This provides a cushioning layer between you and the support system in the bed. Different kinds of padding will provide different levels of comfort.
- Ultra Cold System
- 1" Carbon Fiber Memory Foam
- 1 1/2" Deep Reaction Max Memory Foam
- 1" Serta Balanced Support Foam
- 3" Air Support Foam
Correct Back Support System This is a general term used to describe how a mattress distributes and stabilizes body weight and maintains proper spinal alignment. Different materials provide different levels of support.
- 7" Serta Foam Core
Box Spring - Foundation (optional)
- StabL Base Foundation
- Regular Box Spring Height: 9
- Low Profile Height: 5.5
Warranty This tells you what kind of warranty you have and how long it will last. A typical warranty lasts about 10 years.
- Non-prorated
- 10 year warranty against manufacturer's defects
Expert Review
►
My Take On The King-Sized Serta iComfort CF4000 Firm Mattress
by Jed HarringtonAre you living in a home that lacks a moderate sleeping solution? You're covered with the King-Sized Serta iComfort CF4000 Firm Mattress. This luxurious mattress offers impressive value to all buyers.
The Right Support
The King-Sized Serta iComfort CF4000 Firm Mattress is perfectly designed for back and side sleepers alike — boasting a comfort rating of five. However, I wouldn't recommend this mattress to stomach sleepers, who typically require a softer sleeping experience.
Many Forms of ComfortThe King-Sized Serta iComfort CF4000 Firm Mattress uses multiple foams for support, including Carbon Fiber Memory Foam, Ultra Cool PCM, and Air Support Foam. Carbon Fiber Memory Foam channels heat away from your body while you sleep, in addition to providing much-needed back and neck support. Ultra Cool PCM furthers this goal by creating a layer of extra-cool support that aids you in falling asleep faster, while Air Support Foam uses exclusive air-cushion technology to contour around the curves of your body. These foams are each exceptional in their own right, but create an unbeatable sleeping experience when put together.
Dependable FoundationWhile foam and density are important factors in any mattress, the King-Sized Serta iComfort CF4000 Firm Mattress exceeds expectations with a dependable StabL Base Foundation. This optional foundation uses a V-shaped construction to isolate the impact of movement. This is particularly useful if you plan to share the mattress with a sleeping partner.
Great CoverageIn addition to the multitude of other features included in this mattress, the King-Sized Serta iComfort CF4000 Firm Mattress has a Max Cool Cover. This cover, made from high-performance fibers, delivers an impressive burst of instant cool-to-the-touch sensation, working to prevent tossing and turning while you sleep.
Fully CertifiedFinally, the King-Sized Serta iComfort CF4000 Firm Mattress has a CertiPUR-US Certification. This certification proves the mattress has undergone rigorous, independent testing and met or exceeded quality expectations.
A Valuable OptionIn conclusion, the King-Sized Serta iComfort CF4000 Firm Mattress is guaranteed to impress back and side sleepers alike. For a sleeping solution that will put your current mattress to shame, consider adding the King-Sized Serta iComfort CF4000 Firm Mattress to your home furniture collection today.
Dimensions
| Size | Height | Width | Length |
| King | 13.5" | 76" | 80" |
| Cal King | 13.5" | 72" | 84" |
| Queen | 13.5" | 60" | 80" |
| Twin XL | 13.5" | 38" | 80" |
Works With All Bed Types
Box Spring
Traditional Frames
Adjustable Bases
Platform
Your mattress purchase is fully compatible with all modern support systems, including adjustable base, platform bed, box spring/foundation, even the floor!
120 Night Money Back Guarantee
- Try your mattress in the comfort of your own home for 120 days, risk free.
- Just sleep on it for at least 30 nights so that your body can adjust to the new support system and if you are not completely satisfied, let us know.
- We’ll give you your money back, stress fee! All you pay is a $139.00 processing fee and a restocking fee equal to 20% of the purchase price (restocking fee not to exceed $500).
- See Program details here »
We test and measure body pressure on each mattress using sophisticated technology. We then provide you a personal recommendation.
Learn More »
See how far you'll sink into our mattresses - see how they'll feel. With our Comfort Depth measurements you'll know how a mattress will feel.
Learn More »