Kingsdown Universal Black Boxspring

The Kingsdown Universal Black foundation is highly durable and designed to support the body for optimal sleep through the night. The metal support structures are welded together and connected to a sturdy wood frame. This combination allows the foundation to deliver a more stabilized base layer than traditional open coil foundations. Semi-Flex foundations are designed to be squeak- and crack-resistant over time. Available in standard and low profile heights.

Give your mattress more support or to raise the height - this Kingsdown box spring is available in standard height (approx) 9 inches high - or in low profile which is (approx) 5 inches high.

PureCare Silver five Sided Mattress Protector

from $110.00

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Healthy Sleep Ultra-Tech Advanced Pillow

from $99.00

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Multiple Colors

DreamFit Pima Cotton Sheets

from $129.99

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subtotal:

$210.00

get it Delivery date contingent on available inventory

Local
Delivery

Local delivery and set up is included for a flat fee of $69.99 within 25 miles of any Sit ‘n Sleep store.

We will also "haul away" your old mattress and box spring upon delivery of your new order: Just let us know!

Next day delivery on available inventory. Not applicable for UPS and FedEx orders. See our COVID-19 page for more information.

120-Night Sleep Trial

Buying a new mattress is not something you do everyday. Our 120-night sleep trial and comfort guarantee means you can rest easy.

10 Year Warranty

You spend a third of your life asleep on your mattress. Shouldn't you at least lay on it first? Come visit one of our 39 store locations and get comfy with your purchase.

Mattress Removal

We will "haul away" your old mattress and box spring upon delivery of your new order: Just let us know if you would like this service.

Add a Base and Frame:

Knickerbocker Promo Frame

from $67.00

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On Sale

Infinity Platform

from $349.99

$299.99

get it Delivery date contingent on available inventory

Sealy Ease 4.0 Adjustable Base

from $899.00

get it Delivery date contingent on available inventory

Have Questions?

We're here to help. Give us a call or visit your local store.

Ready for Your Best Night’s Sleep?

Some Models Require Matching Boxsprings. Please check your Models manufacture Warranty for Details.
Standard Boxspring Height (Approx.) 9"
Low Profile Boxspring Height (Approx.) 5"
10 Year Warranty

Metal Support Structures 

Sturdy Wood Frame 

Stabilized Base Layer 

Squeak- and crack-resistant over time

Approx.
Twin 38" x 75"
Twin XL 38" x 80"
Full 54" x 75"
Queen 60" x 80"
King 38" x 80" Two required for King Mattress
CA King 36" x 84" Two required for CA King Mattress
CA King Split 36" x 84"

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