Furniture › Bedroom Furniture › Mattresses & Boxsprings › Boxsprings & Foundations › mattress king

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

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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Mattress Foundation - High Profile, 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

Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 38 W x 80 D in | Wayfair FND-6021

9inch All wood foundation Size: Eastern King Split | Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 38 W x 80 D in | Wayfair more

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

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

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

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

Ashley Sleep Better than a Boxspring King Foundation - Ashley Furniture M91X42

"Ashley Sleep Better than a Boxspring King Foundation - Ashley Furniture M91X42 Behold the newest foundation of comfort. The Better than a Box Spring 2-piece king mattress riser is an all-in-one support system that takes the place of an ordinary bed... more

Kingsdown Passions Engleson Cushion Firm 15 Inch Hybrid Euro Pillow Top Mattress, Foundation Included

Experience undeniable comfort and luxury sleep with the Kingsdown Passions Engleson Collection 15 Inch Hybrid Mattress. more

Mattress Foundation - High Profile, 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

Mattress Foundation - Low Profile, 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

Mattress Foundation - Slim Profile, 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

Alwyn Home Easy Wood Box Spring/Foundation w/ Simple Assembly Wood in Brown | 7.75 H x 75.5 W x 79.5 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: King, Profile: Standard Profile... more

Alwyn Home Easy Wood Box Spring/Foundation w/ Simple Assembly Wood in Brown | 4.5 H x 75.5 W x 79.5 D in | Wayfair 90FBAC4E1711424DB9DDDD252F03552A

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. Profile: Low Profile (4.5"), Size: King... more

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

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

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

Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 54 W x 80 D in | Wayfair FND-6040

9inch All wood foundation Size: Full XL | Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 54 W x 80 D in | Wayfair more

Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 38 W x 74 D in | Wayfair FND-6010

9inch All wood foundation Size: Twin | Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 38 W x 74 D in | Wayfair more

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

Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 60 W x 80 D in | Wayfair FND-6050

9inch All wood foundation Size: Queen | Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 60 W x 80 D in | Wayfair more

King Firm 9" Hybrid Mattress - Spinal Solution Medium PillowTop w/ Box Spring/Foundation | 80 H x 76 W 17 D in Wayfair PC30199-6/6-2S

This mattress has springs with 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 pocket... more

Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 54 W x 74 D in | Wayfair FND-6030

9inch All wood foundation Size: Full | Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 54 W x 74 D in | Wayfair more

King Firm 9" Hybrid Mattress - Spinal Solution Medium PillowTop w/ Box Spring/Foundation | 80 H x 76 W 13 D in Wayfair PC30199-6/6-2lps

This mattress has springs with 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 pocket... more

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

Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 38 W x 80 D in | Wayfair FND-6020

9inch All wood foundation Size: Twin XL | Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 38 W x 80 D in | Wayfair more

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

Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 38 W x 74 D in | Wayfair FND-6010

9inch All wood foundation Size: Twin | Corsicana Mattress Hospitality 9Inch Wood Foundation Cal King Wood in Brown | 9 H x 38 W x 74 D in | Wayfair more

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

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

Beautyrest Triton Foundation Wood in Brown | 9 H x 78 W x 72 D in | Wayfair 700810116-9960

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: King, Profile: Standard | Beautyrest Triton Foundation Wood in Brown |... more

Beautyrest Triton Foundation Wood in Brown | 4 H x 78 W x 72 D in | Wayfair 700810116-9860

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: King, Profile: Low | Beautyrest Triton Foundation Wood in Brown | 4 H... more

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. Size: California King, Profile: Standard | Beautyrest Triton Foundation Wood... more

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

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

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

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