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Toto Ultramax Round 1 Piece Toilet MS853113S#03 Bone


Part of the Toto Ultramax collection
Manufacturer SKU: MS853113S#03
Average Rating:See 46 Customer Reviews
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UltraMax® Toilet, 1.6 GPF

Sleek high profile round one piece toilet with 12" rough-in. Low consumption (6 Lpf/1.6 Gpf) siphon jet flushing action. Tank cover, fittings, chrome plated trip lever and SoftClose seat included.



  • Sleek high profile one piece toilet
  • G-Max® Flushing System: Quiet, powerful, commercial grade flushing performance
  • Complete with SoftClose® seat, or upgrade to a Washlet®
  • Fast Flush: Wide 3" flush valve is 125% larger than conventional 2" flush valves
  • Wider, 2 1/8" computer designed, fully glazed trapway
  • Large water surface

Additional Information

Soft Close Seat Yes
Toilet Seat Included Yes


Angle Supply Included No
Toilet Bowl Included Yes
Toilet Tank Included Yes
Trip Lever Finish Chrome
Trip Lever Included Yes
Toilet Type (# of pieces) One Piece
Mounting Type Floor Mount
Flush Manual or Automatic Manual
Flush Type Gravity
Outlet Type Floor
Width in Inches 16.50
Length in Inches 26.50
Height in Inches 27.13
Trip Lever Placement Left
Bowl Shape Round
Gallons Per Flush 1.6
Rough In 12

Latest Reviews for the Toto Ultramax Round 1 Piece Toilet MS853113S#03 Bone

Date Reviewed: 6/11/2013 1:19:16 PM
Overall Rating:
Ease of Install:
Flush Rating:


Great Design,Functional,Works Great,good flusher



Other Thoughts:

we had two of these in our old house. only had to plunge several times in 10 years. soft-close seat is an added nice touch.
Date Reviewed: 4/2/2013 9:43:22 AM
Overall Rating:
Ease of Install:
Flush Rating:


Works Great



Other Thoughts:

Great Toilet. Seems to work very well. Very happy with purchase.
Date Reviewed: 2/12/2013 11:22:56 AM
Overall Rating:
Ease of Install:
Flush Rating:

saves water


Great Design,Functional,Works Great



Other Thoughts:

It seems to be a very efficient toilet, uses little water but flushes clean. Installed one 6 months ago, and purchased the same model again when we needed another toilet. Looks good too, and very compact.
Date Reviewed: 2/5/2013 8:28:02 AM
Overall Rating:
Ease of Install:
Flush Rating:


Easy to Install,Works Great,Great function,Compact size,sleek design,reasonable price for the quality



Other Thoughts:

The toilet is beautiful, fits my tiny bathroom, works perfectly, and National Builders was extremely responsive with very competitive prices. Great service.

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Other Customers have asked these questions.   ( 4 questions about this product )

Does this toilet come in a 10inch rough in?

Hi, Dale. Thanks for checking with us. Unfortunately, the ultramax series does not come in a 10" rough in. I would recommend looking at some of Toto's skirted toilets, as they have the option of a 10" rough in adaptor piece for the toilet. Here's an example:

With this adaptor:

If you are looking for a Toto one-piece with a 10" rough-in. I think this would be your best bet. Please let me know if I can assist you further.


Taylor Roy 

National Builder Supply 

866 355 0310

Direct Line 

678 737 8497

Was This Helpful?   0 )  Yes    ( 0 )    No

Can this toilet be installed with a water supply that comes through the floor rather than out of the wall? My supply line comes up about 2" from the wall (with flange, it's about 3") and is about 6.5" from the left of the center of current toilet (with flange, about 5.5"). Thanks!

Yes, according to the spec sheet as long as you have 5-1/8" of room between the center line of your toilet and the water supply you will be able to install this toilet.

National Builder Supply available
Was This Helpful?   1 )  Yes    ( 0 )    No

Can one get the round front toto ultramax with "sanigloss"? How?

No, the Sanagloss is only available in the elongated models.

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Was This Helpful?   1 )  Yes    ( 0 )    No

What does the s stand for in the model number following 853113? Is the ptrap area of the toilet glazed?

The S on the Toto toilets stands for the 1.6 gallon per flush GMAX flushing system.

Was This Helpful?   2 )  Yes    ( 0 )    No

This product is also listed as:

Colonial White
Sedona Beige
Cotton White
*Represents a discontinued option for this product
Thank you!