





Beautyrest Black® Mattress Foundation Size and Dimensions
Product | Dimensions | Shipping Box Size | Shipping Weight | |||
Beautyrest Black Foundation Low Profile - Twin XL | 80"L x 38"W x 5.5"H | 80"L x 38"W x 5.5"H | 29.36 Lbs | |||
Beautyrest Black Foundation Low Profile - Full | 75"L x 53"W x 5.5"H | 75"L x 53"W x 5.5"H | 36.97 Lbs | |||
Beautyrest Black Foundation Low Profile - Queen | 80"L x 60"W x 5.5"H | 80"L x 60"W x 5.5"H | 42.78 Lbs | |||
Beautyrest Black Foundation Low Profile - King | 80"L x 38"W x 5.5"H | 80"L x 38"W x 5.5"H | 28.97 Lbs | |||
Beautyrest Black Foundation Low Profile - Cal King | 84"L x 36"W x 5.5"H | 84"L x 36"W x 5.5"H | 30.08 Lbs | |||
Beautyrest Flat Foundation Standard - Twin XL | 80"L x 38"W x 9"H | 80"L x 38"W x 9"H | 33 Lbs | |||
Beautyrest Black Foundation Standard - Full | 75"L x 53"W x 9"H | 75"L x 53"W x 9"H | 39.67 Lbs | |||
Beautyrest Black Foundation Standard - Queen | 80"L x 60"W x 9"H | 80"L x 60"W x 9"H | 45.57 Lbs | |||
Beautyrest Black Foundation Standard - King | 80"L x 38"W x 9"H | 80"L x 38"W x 9"H | 32.61 Lbs | |||
Beautyrest Black Foundation Standard - Cal King | 84"L x 36"W x 9"H | 84"L x 36"W x 9"H | 32.74 Lbs |
a closer look
Size & Dimensions
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Twin XL
39" W x 80" L
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Full
52.5 W X 74" L
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Queen
60" W x 80" L
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King/Split King
39" W x 80" L (2)
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Cal King/Split Cal King
35.5" W x 83" L (2)
FAQs
What is a box spring?
A box spring is designed to sit under a mattress to provide extra support and help extend the life of your mattress. The outside is typically covered in fabric, while the inside of the box spring usually features a wooden or metal frame. Box spring alternative, flat foundation, and flat bed foundation are other names you might see associated with a box spring; these are all the same things.
Do I need a box spring for my mattress?
A box spring provides a solid, stable surface for your mattress. Always check with the mattress manufacturer’s website, look at what type of mattress you own, and any warranty details before adding a box spring to your sleep space.
Can I use this box spring foundation on the floor?
While it is OK to use a box spring on the floor, it is recommended to place on a bed frame.
What heights does this foundation come in? And which one should I choose?
The flat foundations are available in 9” and 5.5” profile heights. Consider the height of your mattress when paired with a high or low profile foundation. Depending on your bedroom and sleep set up you may want to have less height or more height added to your mattress from top to bottom.
Can I use this foundation with an adjustable bed frame?
No, it cannot bend and is made for bed frames that are meant to stay flat.
What is the difference between the Beautyrest Mattress Foundation and the Beautyrest Black Mattress Foundation?
The two foundations function the same. The biggest difference between the foundations is the fabric covering. The Beautyrest Black Mattress Foundation is designed to perfectly match the beds in Beautyrest Black® Collection, while the Beautyrest Mattress Foundation pairs with the Beauty Sleep®, Beautyrest®, and Beautyrest® World Class™ Collections.
Will this foundation work with any mattress?
The Beautyrest Black Mattress Foundation is designed to pair with all quilted innerspring and smooth-top hybrid mattresses within the Beautyrest Black® Collection.
Do I have to use a Beautyrest base or foundation with my Beautyrest mattress?
Beautyrest mattresses and foundations are often sold as a set because they are designed to pair together, and we can confirm their compatibility during quality tests. However, you are not required to use a Beautyrest foundation with your Beautyrest mattress. And if the foundation you currently are using is in good shape and uses consistent support it should pair just fine with your Beautyrest mattress.