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    BULYAXIA King Box Spring 9 Inch Metal Box Spring King Size King Box Spring Low Profile Box Spring King with Cover Heavy Duty Mattress Foundation/Bed Base Easy Assembly Non-Slip No Noise

    BULYAXIA King Box Spring 9 Inch Metal Box Spring King Size King Box Spring Low Profile Box Spring King with Cover Heavy Duty Mattress Foundation/Bed Base Easy Assembly Non-Slip No Noise

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    $167.36 $150.58

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    Cocobase Mattress Foundation - California King Size

    Cocobase Mattress Foundation - California King Size

    The CoCoBase Mattress Base is made with a 5 inch durable coconut fiber coconut coir. This new material created by untwisting coconut husks is infused with natural latex. The Spring like qualities of Coconut Coir can be built to utilize the natural... more

    $1,020.31

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    Mattress Foundation - High Profile, California King Split - Ballard Designs California King Split - Ballard Designs

    Mattress Foundation - High Profile, California King Split - Ballard Designs California King Split - Ballard Designs

    Take your nighttime comfort to the next dreamy level with our luxurious and supportive Mattress Foundations. Box edge frames are hand built by Amish craftsmen from solid spruce wood in three profiles, Slim, Low and High, to custom fit your bed and... more

    $1,178.00

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    Mattress Foundation - Slim Profile, California King Split - Ballard Designs California King Split - Ballard Designs

    Mattress Foundation - Slim Profile, California King Split - Ballard Designs California King Split - Ballard Designs

    Take your nighttime comfort to the next dreamy level with our luxurious and supportive Mattress Foundations. Box edge frames are hand built by Amish craftsmen from solid spruce wood in three profiles, Slim, Low and High, to custom fit your bed and... more

    $1,078.00

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    Mattress Foundation - Low Profile, California King Split - Ballard Designs California King Split - Ballard Designs

    Mattress Foundation - Low Profile, California King Split - Ballard Designs California King Split - Ballard Designs

    Take your nighttime comfort to the next dreamy level with our luxurious and supportive Mattress Foundations. Box edge frames are hand built by Amish craftsmen from solid spruce wood in three profiles, Slim, Low and High, to custom fit your bed and... more

    $1,138.00

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    King 12" Hybrid Mattress - Signature Design by Ashley 12 Inch Foundation w/ | 79 H x 59 W D in Wayfair M628M8

    King 12" Hybrid Mattress - Signature Design by Ashley 12 Inch Foundation w/ | 79 H x 59 W D in Wayfair M628M8

    The Hybrid 1200 queen mattress and foundation set is simply a better way to get a great night’s sleep. Feel the support of a truly traditional coil mattress which contours to your body for a comforting feel. High-density foam provides the firmness you... more

    $1,890.42 $1,220.00

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    Amo 2 Inch California King Bunkie Board Mattress Foundation With Slats

    Amo 2 Inch California King Bunkie Board Mattress Foundation With Slats

    Your comfort and pure, restful nightly sleep are more consistent than ever when you add our two inch Amo California king size box spring mattress foundation to your bed. more

    $418.99

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    King 16" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 80 H x 76 W 16 D in Wayfair

    King 16" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 80 H x 76 W 16 D in Wayfair

    Enjoy the sweetest dreams possible with this ultra plush memory foam mattress and Euro top, which is firmer around the edges and softer in the center. With its independent springs that minimize motion transfer and provide body pressure relief, pocket... more

    $1,139.99

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    Signature Design by Ashley 12-inch Chime Elite Foundation with Mattress

    Signature Design by Ashley 12-inch Chime Elite Foundation with Mattress

    A sturdy, twelve-legged metal frame is featured in the Ashley Furniture 12-inch Chime Elite Grey and Black Foundation with Mattress Set -- a perfect solution when you want comfort and elemental design. more

    $1,103.49

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    Signature Design by Ashley 12-inch Chime Elite Foundation with Mattress

    Signature Design by Ashley 12-inch Chime Elite Foundation with Mattress

    A sturdy, twelve-legged metal frame is featured in the Ashley Furniture 12-inch Chime Elite Grey and Black Foundation with Mattress Set -- a perfect solution when you want comfort and elemental design. more

    $898.49

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    King 20" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 80 H x 76 W 20 D in Wayfair

    King 20" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 80 H x 76 W 20 D in Wayfair

    Enjoy the sweetest dreams possible with this ultra plush memory foam mattress and Euro top, which is firmer around the edges and softer in the center. With its independent springs that minimize motion transfer and provide body pressure relief, pocket... more

    $1,219.99

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    Gaia Mattress Foundation, Cal King

    Gaia Mattress Foundation, Cal King

    || Fremont & Park - Gaia Collection || Providing support to your California King mattress is the Gaia mattress foundation. The black metal framing of the support system features a white and gray two-tone cover. more

    $211.99 $195.99

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    King Firm 17" Hybrid Mattress - Alwyn Home Shannan 9-Inch Medium TightTop Single Sided w/ Box Spring/Foundation | 80 H x 76 W 17 D in Wayfair

    King Firm 17" Hybrid Mattress - Alwyn Home Shannan 9-Inch Medium TightTop Single Sided w/ Box Spring/Foundation | 80 H x 76 W 17 D in Wayfair

    This mattress has Pocketprings. With its independent springs that minimize motion transfer and provide body pressure relief, Pocket-mattresses are a great option for almost anyone. Even lovers of memory foam or other foam mattresses can benefit from... more

    $1,099.99

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    King Firm 13" Hybrid Mattress - Alwyn Home Shannan 9-Inch Medium TightTop Single Sided w/ Box Spring/Foundation | 80 H x 76 W 13 D in Wayfair

    King Firm 13" Hybrid Mattress - Alwyn Home Shannan 9-Inch Medium TightTop Single Sided w/ Box Spring/Foundation | 80 H x 76 W 13 D in Wayfair

    This mattress has Pocketprings. With its independent springs that minimize motion transfer and provide body pressure relief, Pocket-mattresses are a great option for almost anyone. Even lovers of memory foam or other foam mattresses can benefit from... more

    $1,029.99

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    Queen 12" Hybrid Mattress - Signature Design by Ashley 12 Inch Foundation w/ | 79 H x 59 W D in Wayfair M628M7

    Queen 12" Hybrid Mattress - Signature Design by Ashley 12 Inch Foundation w/ | 79 H x 59 W D in Wayfair M628M7

    The Hybrid 1200 queen mattress and foundation set is simply a better way to get a great night’s sleep. Feel the support of a truly traditional coil mattress which contours to your body for a comforting feel. High-density foam provides the firmness you... more

    $1,466.90 $970.00

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    Queen 12" Hybrid Mattress - Signature Design by Ashley 12 Inch Foundation w/ | 79 H x 59 W D in Wayfair M628M7

    Queen 12" Hybrid Mattress - Signature Design by Ashley 12 Inch Foundation w/ | 79 H x 59 W D in Wayfair M628M7

    The Hybrid 1200 queen mattress and foundation set is simply a better way to get a great night’s sleep. Feel the support of a truly traditional coil mattress which contours to your body for a comforting feel. High-density foam provides the firmness you... more

    $1,466.90 $970.00

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    Queen 16" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 80 H x 60 W 16 D in Wayfair

    Queen 16" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 80 H x 60 W 16 D in Wayfair

    Enjoy the sweetest dreams possible with this ultra plush memory foam mattress and Euro top, which is firmer around the edges and softer in the center. With its independent springs that minimize motion transfer and provide body pressure relief, pocket... more

    $739.99

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    Queen 20" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 80 H x 60 W 20 D in Wayfair

    Queen 20" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 80 H x 60 W 20 D in Wayfair

    Enjoy the sweetest dreams possible with this ultra plush memory foam mattress and Euro top, which is firmer around the edges and softer in the center. With its independent springs that minimize motion transfer and provide body pressure relief, pocket... more

    $828.82 $779.99

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    Twin 20" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 74 H x 38 W 20 D in Wayfair

    Twin 20" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 74 H x 38 W 20 D in Wayfair

    Enjoy the sweetest dreams possible with this ultra plush memory foam mattress and Euro top, which is firmer around the edges and softer in the center. With its independent springs that minimize motion transfer and provide body pressure relief, pocket... more

    $559.99

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    Twin 16" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 74 H x 38 W 16 D in Wayfair

    Twin 16" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 74 H x 38 W 16 D in Wayfair

    Enjoy the sweetest dreams possible with this ultra plush memory foam mattress and Euro top, which is firmer around the edges and softer in the center. With its independent springs that minimize motion transfer and provide body pressure relief, pocket... more

    $519.99

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    Full 20" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 74 H x 53 W 20 D in Wayfair

    Full 20" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 74 H x 53 W 20 D in Wayfair

    Enjoy the sweetest dreams possible with this ultra plush memory foam mattress and Euro top, which is firmer around the edges and softer in the center. With its independent springs that minimize motion transfer and provide body pressure relief, pocket... more

    $699.99

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    Full 16" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 74 H x 53 W 16 D in Wayfair

    Full 16" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 74 H x 53 W 16 D in Wayfair

    Enjoy the sweetest dreams possible with this ultra plush memory foam mattress and Euro top, which is firmer around the edges and softer in the center. With its independent springs that minimize motion transfer and provide body pressure relief, pocket... more

    $659.99

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    Twin 16" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 74 H x 38 W 16 D in Wayfair

    Twin 16" Hybrid Mattress - The Twillery Co.® Laird 12-Inch Ultra Plush Euro Top Single Sided w/ Box Spring/Foundation | 74 H x 38 W 16 D in Wayfair

    Enjoy the sweetest dreams possible with this ultra plush memory foam mattress and Euro top, which is firmer around the edges and softer in the center. With its independent springs that minimize motion transfer and provide body pressure relief, pocket... more

    $519.99

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    Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in White | 9 H x 36 W x 84 D in | Wayfair FND-6071

    Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in White | 9 H x 36 W x 84 D in | Wayfair FND-6071

    9inch All wood foundation Size: California King Split | Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in White | 9 H x 36 W x 84 D in | Wayfair more

    $296.99

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    Alwyn Home Split Wood Mattress Foundation Bunkie Board Wood in Brown | King | Wayfair ANEW1113 37497884

    Alwyn Home Split Wood Mattress Foundation Bunkie Board Wood in Brown | King | Wayfair ANEW1113 37497884

    Portable and convenient. Make this Bunkie board a staple in an extra room. With a two-inch foundation wrapped in tan fabric, it supports bunk beds, day beds, and beds with low-profile foundations. Mattress support makes this a convenient choice. Secure... more

    $471.98 $390.00

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    Alwyn Home Split Wood Mattress Foundation Bunkie Board Wood in Brown | King | Wayfair ANEW1113 37497884

    Alwyn Home Split Wood Mattress Foundation Bunkie Board Wood in Brown | King | Wayfair ANEW1113 37497884

    Portable and convenient. Make this Bunkie board a staple in an extra room. With a two-inch foundation wrapped in tan fabric, it supports bunk beds, day beds, and beds with low-profile foundations. Mattress support makes this a convenient choice. Secure... more

    $471.98 $390.00

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    Alwyn Home Myrtlewood California King Foundation | 72 W x 84 D in | Wayfair 5492FAF521BD4B5B85BAB79558B0E0ED

    Alwyn Home Myrtlewood California King Foundation | 72 W x 84 D in | Wayfair 5492FAF521BD4B5B85BAB79558B0E0ED

    Sleep like a baby on the Myrtlewood California King-size mattress foundation and wake up to a new day feeling relaxed and rejuvenated. Specifications: Case: 1Set/2Ctn/31.5'/70LbsSize: 84" x 72" x 7"HFinish: GrayMaterials: Mattress | Alwyn Home... more

    $719.99 $599.99

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    Priage by Zinus 7.5-inch BiFold Foundation

    Priage by Zinus 7.5-inch BiFold Foundation

    The BiFold Split king size box spring by Priage features a folding mattress foundation that can compresses for added ease. It is constructed with heavy gauge steel and has a fabric cover. It is 7.5 inches deep. more

    $449.49 $359.59

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    Kingsdown Dynamic Semi-Flex Foundation Metal | 8.5 H x 35.5 W x 83.5 D in | Wayfair FG-15006-SFH-SCK

    Kingsdown Dynamic Semi-Flex Foundation Metal | 8.5 H x 35.5 W x 83.5 D in | Wayfair FG-15006-SFH-SCK

    High-grade durable steel is configured and welded into a unique design for dynamic support of Kingsdown mattresses to further optimize mattress performance and support the body for optimal sleep through the night. Size: California King, Profile:... more

    $902.00 $575.00

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    Kingsdown Dynamic Semi-Flex Foundation Metal | 5.5 H x 35.5 W x 83.5 D in | Wayfair FG-15006-XSF-SCK

    Kingsdown Dynamic Semi-Flex Foundation Metal | 5.5 H x 35.5 W x 83.5 D in | Wayfair FG-15006-XSF-SCK

    High-grade durable steel is configured and welded into a unique design for dynamic support of Kingsdown mattresses to further optimize mattress performance and support the body for optimal sleep through the night. Size: California King, Profile: Low... more

    $894.00 $573.00

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    Alwyn Home Easy Wood Box Spring/Foundation w/ Simple Assembly Wood in Brown | 4.5 H x 71.5 W x 83.5 D in | Wayfair FE3D5A2BEA7E447FAFB3E80B71932310

    Alwyn Home Easy Wood Box Spring/Foundation w/ Simple Assembly Wood in Brown | 4.5 H x 71.5 W x 83.5 D in | Wayfair FE3D5A2BEA7E447FAFB3E80B71932310

    We are a proud manufacturer of the finest quality mattresses and box springs, with the highest standards in durability, quality, comfort, and beauty. All of our products are to ensure that you get only the best. Size: California King, Profile: Low... more

    $390.00 $209.99

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    Alwyn Home Easy Wood Box Spring/Foundation w/ Simple Assembly Wood in Brown | 7.75 H x 71.5 W x 83.5 D in | Wayfair

    Alwyn Home Easy Wood Box Spring/Foundation w/ Simple Assembly Wood in Brown | 7.75 H x 71.5 W x 83.5 D in | Wayfair

    We are a proud manufacturer of the finest quality mattresses and box springs, with the highest standards in durability, quality, comfort, and beauty. All of our products are to ensure that you get only the best. Size: California King, Profile: Standard... more

    $199.99

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    Beautyrest Triton Foundation Wood in Brown | 9 H x 85 W x 76 D in | Wayfair 700810116-9970

    Beautyrest Triton Foundation Wood in Brown | 9 H x 85 W x 76 D in | Wayfair 700810116-9970

    This box spring offers support, durability, and reduced motion. When used with a proper supportive bed frame, it helps prevent sagging and bowing for the life of the mattress. Profile: Standard, Size: California King | Beautyrest Triton Foundation Wood... more

    $613.00 $559.99

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    Beautyrest Triton Foundation Wood in Brown | 4 H x 85 W x 76 D in | Wayfair 700810116-9870

    Beautyrest Triton Foundation Wood in Brown | 4 H x 85 W x 76 D in | Wayfair 700810116-9870

    This box spring offers support, durability, and reduced motion. When used with a proper supportive bed frame, it helps prevent sagging and bowing for the life of the mattress. Size: California King, Profile: Low | Beautyrest Triton Foundation Wood in... more

    $613.00 $539.99

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    More information about Mattresses & Boxsprings

    Best prices on 12 inch california king mattress, Boxsprings & Foundations in Mattresses & Boxsprings online. Visit Bizrate to find the best deals on top brands. Read reviews on Home & Garden merchants and buy with confidence.