Monterrey Gentle Firm Waterbed Insert


fs_prod1 (1)Waterbed Insert Replacement Mattress

The Monterrey Gentle Firm waterbed insert mattress has been designed to fit waterbed frames that have the wood sides. We believe it is a good choice specifically for those needing a harder firmer bed yet needing just a touch of extra comfort on the sleeping surface. This is not a mushy sinky feeling bed and easily drops into your empty wooden frame without any changes having to be made to your bed. It  is manufactured by Therapedic and has two sides which provides more bang for your buck by extending mattress life. A unique feature rarely found on this type of mattress is that it is made slightly smaller than the surrounding frame leaving enough space for making the bed and being able to flip it over occasionally. Below there are additional specifications and details concerning the Monterrey Firm replacement mattress.
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SKU: 1132i-ParentSku Category:


Monterrey Gentle Firm Replacement Mattress

This is a regular mattress made special to fit inside of a hardside waterbed and has been built to last for years many years to come. It utilizes higher density foam for a longer life, firmer feel and better support. The Monterrey Gentle Firm is built with taller coil springs that are heat tempered for longer life expectancy. The thicker mattress will add to the ease of getting in and out of bed helping you to forget that the bed is surrounded with a wooden frame.  Caring for the mattress is easy and taking advantage of its 2 sides by regularly turning and flipping it over can really increase overall mattress life and even out wear in the beds surface materials. Two sides is a feature rarely found in waterbed inserts. Therapedic has shaved one inch off the mattress all the way around so it fits your wood frame better and allows you to get your fingers and hands between the frame and mattress for easier making.

Detailed Measurements / Sizes

Super Single Waterbed Frame
Cavity Measures 48 wide X 84 long
Replacement Water bed Mattress Insert Measures 46 wide x 82 long

California Queen Waterbed Frame
Cavity Measures 60 wide X 84 long
Replacement Water bed Mattress Insert Measures 58 wide x 82 long

California King Waterbed Frame
Cavity Measures 72 wide X 84 long
Replacement Water bed Mattress Insert Measures 70 wide x 82 long

Mattress Height:

From Bottom to Top ThicknessApprox. 13″

Measurement may vary slightly due to being hand made.

See What’s In It!

Fabric – Stretch Knit with Surface Fresh ™

Quilt – SafeGuard®, 1″ High Performance Gel Foam, 1/2″ Comfort Foam


  • 1-½” 5-Zone Firm Foam
  • 1″ Support Foam
  • Insulator Pad

Support System

805 Alternating Coil LFK

14.5 Gauge Steel Thickness

Coil Counts Illustrate actual numbers before modification has taken place.


Did we mention the benefits?

  • Two Sided
  • Flip it over
  • Spin it around end to end
  • Double sided
  • Turn it over

Edge–Superior Foam Encasement

Warranty–10 Years

Photo for illustration purposes. Fabric color may vary from actual photo.

For even more Waterbed Inserts To Choose From Click Here


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