Prairie Dunes Firm Waterbed Insert



Free Shipping on this product!Mattress Sized Special For Hardside Waterbeds!

Wouldn’t just love a standard bed mattress that is ready to fit right down into your current wooden frame waterbed?  Therapedic® builds the Prairie Dunes Firm waterbed insert to do just that. No more leaks or mattresses that won’t drain. It’s built especially to fit your current waterbed frame leaving just enough space along the sides and ends to put your bedding on. A special feature rarely found for this price is that it has two sides and can be flipped over to prolong mattress life. Available in 3 sizes including super single, California Queen, and California King to fit your needs. Scroll down the page for more detailed information about the Prairie Dunes Firm insert.
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SKU: 1128i-ParentSku Categories: ,


Prairie Dunes Firm Waterbed Insert

Specially Built to Fit Your Waterbed

This well priced solution replaces liquid with steel coil springs for better overall body support. No leaks, no waterbed treatment, and you can use the bedding you already have. The Prairie Dunes Firm from Therapedic® is not a mushy soft mattress and really is an excellent choice for those who would prefer their sleeping surface to have that old time solid firm feel and it can be flipped over because it’s 2-sided. Keep your headboard, wooden side frame, and drawers if you have them. Nothing else to purchase!

Comprehensive Measurements / Sizes

Super Single Waterbed Frame
Cavity Measures 48 wide X 84 long
Specialty Mattress Insert to Fit Waterbed Frame Measures 46 wide x 82 long

California Queen Waterbed Frame
Cavity Measures 60 wide X 84 long
Specialty Mattress Insert to Fit Waterbed Frame Measures 58 wide x 82 long

California King Waterbed Frame
Cavity Measures 72 wide X 84 long
Specialty Mattress Insert to Fit Waterbed Frame Measures 70 wide x 82 long

Mattress Height:

Crown to Crown10″

Tape Edge to Tape Edge–7″

Components Used to Assemble Mattress

Fabric: Knit

Quilt: FR Safe Fiber

  • 1″ Polyurethane Foam
  • 1/2″ Polyurethane Foam

Pillow Top: NA


  •  3/4″ Polyurethane Foam
  • Insulator Pad

Support System:

  • 504 Alternating VertiCoil Edge
  • 13.75 Gauge Steel Coil Wire

Coil counts are based on normal mattress sizes. These coil units are then modified.

  • Twin–286
  • Full–396
  • Queen–504
  • King–648

Edge: Superior Foam Encasement

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

Warranty: 10 Year

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

See more Waterbed Inserts

2.3/5 (20 Reviews)

Additional information

Weight 94 lbs

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