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Kingsdown Full Low Profile Foundation

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SKU: 51483471

KINGSDOWN Quality Craftsman Since 1904. A blue and white mattress on a bed frame in a modern, well-lit bedroom.
Style + SUBSTANCE. Since 1904, Kingsdown has handcrafted mattresses in the US with superior materials and quality.
Handcrafted Excellence
Handcrafted Excellence

Handcrafted in the United States, our master artisans are committed to better sleep through exceptional craftsmanship.

Finest Materials
Finest Materials

Every square inch of a Kingsdown mattress is handcrafted with superior materials, not just the parts you can see and touch.

Tested and Certified
Tested and Certified

Every single mattress is tested and certified before it leaves our hands to ensure consistent quality and accurate support.

0:000:00

Kingsdown

For over a century, the Kingsdown name has been synonymous with unprecedented quality. Every detail is considered, and we ensure superior material selection and perfection, right down to the last stitch of our renowned tailoring. Since 1904, we’ve never compromised on comfort, and neither should you.

You'll Love Kingsdown

Sleep Cooler
Sleep Cooler

Kingsdown mattresses are designed to help regulate temperature for cooler, more comfortable sleep.

Motion Isolation
Motion Isolation

Individually wrapped coils decrease motion transfer, and select models feature an added buffer that runs the length of the mattress to mitigate partner disturbance.

Highly Rated
Highly Rated

Kingsdown mattresses are highly rated with over 20,000 reviews, averaging 4.7 stars and a 96% referral rate.

Kingsdown foundations are meticulously hand assembled using sustainably sourced Canadian Spruce, which is exceptionally durable. Each piece of lumber is not only heat-treated, but kiln-dried, which improves the performance of the wood over time. Each wooden slat is placed more closely together and cut a full inch wider than most manufacturers to provide a sturdier base.

Collection

Box Spring

Warranty

10 year limited warranty -

Code J -

View Warranty

Appearance

Upholstered

Color

Gray

Color family

Gray

Profile height

Low profile

Upholstery material

Fabric

Q&A answers generated with AI assistance.

What is the benefit of a low-profile 5-inch foundation compared to a standard height?

A low-profile foundation is an excellent choice for modern bedrooms featuring thick, high-profile mattresses. At just 5 inches tall, it keeps the total height of your bed at a manageable level, making it easier to get in and out of bed while maintaining a sleek, contemporary look. This is especially helpful for children’s rooms or for those who prefer the aesthetic of a platform-style bed.


What is the difference between this foundation and a traditional box spring?

While a traditional box spring contains internal coils with significant "give," this is a rigid foundation designed to provide a firm, non-flexing surface. This construction is the modern standard for support, specifically engineered to maximize the performance of memory foam, hybrid, and advanced innerspring mattresses by providing the consistent, flat base they require.


What makes the construction of this mattress foundation superior?

This foundation is built for long-term durability using sustainably sourced Canadian Spruce. Unlike standard bases, the lumber is both heat-treated and kiln-dried. This specialized drying process removes deep-seated moisture, which is critical for preventing the wood from warping, cracking, or developing squeaks over time.


Is this foundation suitable for a humid climate?

Yes. Because the Canadian Spruce frame is kiln-dried, it is significantly more resistant to the environmental changes common in humid climates. By stabilizing the wood’s moisture content during manufacturing, the foundation is less likely to expand or contract, preventing the structural instability that can lead to noise or damage in damp conditions.


How do the slats on this foundation protect my mattress?

To provide a sturdier base than most manufacturers, the wooden slats on this foundation are cut a full inch wider and placed more closely together. This high-density support system prevents your mattress from sagging between slats, ensuring it remains level and supportive, which is essential for maintaining your mattress's long-term comfort and warranty requirements.


Will this foundation fit through narrow entryways or staircases in older homes or apartments?

This is a single-piece full-size foundation with dimensions of 75"L x 54"W x 5"H. Because it does not fold or disassemble, we recommend measuring your doorways, tight hallways, and staircases before ordering to ensure it can be navigated into your room. For a seamless experience, our full-service delivery team can handle the heavy lifting and professional placement for you.


Does this mattress foundation require assembly?

No assembly is required. This foundation is meticulously hand-assembled by experts before it reaches your home, ensuring that every slat and joint is perfectly secured for immediate use.

54.00"w x 75.00"d x 5.00"h

4 out of 5 stars

Based on 11 ratings
5
64%
4
9%
3
9%
2
0%
1
18%
Terra G
Verified Buyer

Don't buy - totally crap!

Purchased On Aug 3, 2025

Extremely poor quality!

Reviewed On Sep 30, 2025
Response from Staff
Terra, we reached out to discuss your issues. Feel free to call us back!
Morgane Hinde
Sep 30, 2025
Argusto B
Verified Buyer

Purchased On Oct 1, 2023

Reviewed On Sep 22, 2025
Mario A
Verified Buyer

Purchased On Jul 13, 2025

Solid foundation perfect height

Reviewed On Sep 4, 2025
Charlotte H
Verified Buyer

It is ok

Purchased On Jul 5, 2025

I don't think it has much of effect on the sleeping on mattress

Reviewed On Aug 22, 2025
Digna A
Verified Buyer

Purchased On Jun 3, 2025

Reviewed On Jul 7, 2025