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Perfect Sleeper Essentials Grenquist Firm Reviews

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Perfect Sleeper Essentials Grenquist Firm

Grenquist Firm could be labelled the "entry level" model in the Essentials Collection of Serta's Perfect Sleeper brand innerspring mattresses. At about 10" high it is the lowest mattress in this collection. The reason for this is that it only has a Serta Support Pad between the coils and the quilted cover.

The cover fabric of the Grenquist Firm is a blend of polyester, rayon, and lycra. It is quilted to FireBlocker Fiber flame retardant, Pillo-Fill quilting fiber, and 1" of Serta's PillowSoft Foam. Beneath this quilt is a Serta Support Pad.

The support core of the Perfect Sleeper Essentials Grenquist Firm is a 520-count continuous coil innerspring. The rows of coils in this Continuous Support unit are oriented lengthwise, from head of the mattress to the foot. This configuration minimizes motion transfer from one sleeper to the other. Continuous coil springs are very durable, more so than other innerspring types.

Edge support is the role of Serta's Comfort Last Construction. A 6-gauge perimeter rod, called Reinforced Edge, bolsters the edges of the sleeping surface to prevent roll-off.

Being a continuous coil innerspring mattress, the Grenquist Firm is compatible with a variety of foundations: box springs, platforms, wood slats, adjustable beds. Serta provides two: StabL Base double-beam foundation and the Motion Perfect II Adjustable Power Base.

The Grenquist Firm is available through several retailers. Some of these retailers use alternative names for this model. A few also offer the Grenquist Plush or its equivalent, which is not shown on the Serta website.

Serta covers the Essentials Grenquist Firm with is 10-year limited manufacturers warranty. The company also has its Comfort Assurance Program, a 45-day sleep trial period. They say, "We know that even after making a careful selection, sometimes people may need a different level of comfort." Some retailers offer a 100-day sleep trial.

  • Mattress and Bed Set Model Name

    Perfect Sleeper Essentials Grenquist Firm

  • Price Category


  • Listed Manufacturer


  • Location

    Serta International, Customer Service Department, 3 Golf Center #392, Hoffman Estates, IL 60169, 1-888-55-SERTA (1-888-557-3782)

  • Bed Classification


  • Level of Firmness


  • Inner Bed Composition

    Continuous coil innerspring with Serta Support Pad and quilted top

  • Mattress Edge Support

    6-gauge perimeter rod

  • Mattress Cover Composition

    Polyester-rayon-lycra blend quilted with FireBlocker, Pillo-Fill fiber, and PillowSoft Foam

  • Total Mattress Height

    10 inches

  • Bed Foundation

    box spring, platform or adjustable bed

  • Special Features

    Consistent support, soft quilting

  • Sleep Trial

    45 days from Serta, some retailers have 100 days

  • Bed Warranty

    10-year limited warranty

  • Manufactured In


  • Restrictions

    Keep in sanitary condition, and provide proper foundation

  • Website


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