Serta King-Size Firm Mattresses

A Serta firm king size mattress gives you all the benefits of a firm bed–and lots of room to enjoy those perks–with a brand name you can trust. Serta is the number one manufacturer of mattresses in the United States, so you can sleep well on a Serta king firm bed, knowing you made a good choice. A Serta king size firm mattress measures 76" by 80", providing plenty of room for you to sleep and enjoy your new bed.

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  • $849.99 - $1,399.99
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  • $1,359.99 - $2,299.99
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  • $1,449.99 - $2,299.99
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