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King-Size
Mattresses

The Original Mattress Factory offers a wide selection of hand-built king-size mattresses. King-size mattresses are 76 inches x 80 inches (± 1 inch). Our king-size mattresses are available in 15 innerspring and three foam models, including two-sided and one-sided models and in comfort levels from soft to hard. We highly recommend you pair your new mattress with a real working box spring, as well as a heavy-duty frame that features a center rail for support. Split box springs come standard on all king-size mattress sets. If you have concerns about being able to easily get in and out of bed due to the height of the mattress, you may want to consider a low-profile box spring. All OMF king-size innerspring mattresses are hinged to enable you to fold the mattress for easy transport.

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  • Product Line: Oasis or Serenity
  • Design Type: Two-sided or Foam
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Oasis Mattress Set Product

Oasis Mattress Set

8.75-inch quality innerspring mattress set hand built with a two-sided design and hard feel.

King: $877.00
Oasis Luxury Firm Mattress Set Product

Oasis Luxury Mattress Set

10.25-inch quality innerspring mattress set hand built with a two-sided design and medium feel.

King: $977.00
Oasis Plush Mattress Set Product

Oasis Plush Mattress Set

11.25-inch quality innerspring mattress set hand built with a two-sided design and soft feel.

King: $1,157.00
Picture of Serenity Mattress Set Product

Serenity Mattress Set

10.5-inch ultra-premium quality memory foam mattress set hand-built with a one-sided design and medium-soft feel.

King: $3,267.00
Serenity Latex Mattress Set Product

Serenity Latex Mattress Set

10.5-inch ultra-premium quality latex foam mattress set hand built with a two-sided design and soft feel.

King: $3,067.00
Serenity Plush Mattress Set Product

Serenity Plush Mattress Set

10.5-inch ultra-premium quality memory foam mattress set hand built with a one-sided design and soft feel.

King: $3,607.00
Oasis Mattress Product

Oasis Mattress

8.75-inch quality innerspring mattress hand built with a two-sided design and hard feel.

King: $479.00
Oasis Luxury Firm Mattress Product

Oasis Luxury Mattress

10.25-inch quality innerspring mattress hand built with a two-sided design and medium feel.

King: $579.00
Oasis Plush Mattress Product

Oasis Plush Mattress

11.25-inch quality innerspring mattress hand built with a two-sided design and soft feel.

King: $759.00
Serenity Mattress Product

Serenity Mattress

10.5-inch ultra-premium quality memory foam mattress hand built with a one-sided design and medium-soft feel.

King: $2,649.00
Serenity Latex Mattress Product

Serenity Latex Mattress

10.5-inch ultra-premium quality latex foam mattress hand built with a two-sided design and soft feel.

King: $2,449.00
Serenity Plush Mattress Product

Serenity Plush Mattress

10.5-inch ultra-premium quality memory foam mattress hand built with a one-sided design and soft feel.

King: $2,989.00